Search is not available for this dataset
query stringlengths 1 13.4k | pos stringlengths 1 61k | neg stringlengths 1 63.9k | query_lang stringclasses 147
values | __index_level_0__ int64 0 3.11M |
|---|---|---|---|---|
A research on existing problem and countermeasure for the management of university's large equipment | This paper analyses the problems existed in the management of the large equipment and discusses several corresponding resolvable schemes from management mechanism,control and training,in order to improve its usage efficiency. | In electric power system, the artificial misoperatio n accident occurs n ow and then, and it conduces comparatively economic loss and influence, therefor e the anti-misoperation of the substation should be improved correspondingly. Ac cording to the wiring design of the electromagnetic lock anti-misoperation, the p ape... | eng_Latn | 5,100 |
Electric power conversion device | An electric power conversion device having an overcurrent protection circuit that, when an overcurrent has occurred in a semiconductor switching element in a lower-side arm of a half-bridge circuit, stops ON/OFF drive of the semiconductor switching element, said overcurrent protection circuit being provided in a drive ... | The article introduces the teaching reformation focusing on course project of power engineering detection and control technology, and discusses the new reformation in the future. | eng_Latn | 5,101 |
The interconnect penalty of small size switches (Tutorial Corner) | In accordance with an example embodiment, a method of operating a work vehicle with an ejector body may include receiving a position signal indicative of a position of the work vehicle, receiving a target profile indicative of a target topography for an area, receiving an ejection command at a controller and entering t... | Based on 80C196MCS a power factor controlling device is designed.This device adjust voltage through SCR to adjust power factor,and it contains a softstart component and various protecting systems.Experi-ments show that the device works well and effectively under under-loading or changed load circumstances. | eng_Latn | 5,102 |
Improved glass-ceramic envelope for vacuum interrupters | This study describes an improved hermetic glass-ceramic-to-metal seal which provides a high strength mechanical joint. The new sealing joint reduces electrical stress at the metal interface and is especially suitable for vacuum interrupters designed for high voltage applications requiring high reliability. An improved ... | This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) grant EP/K02924X/1. E.O.R. is supported by an EPSRC DTA studentship (University of Cambridge), and F.D.D. is supported by the Honorary Vice-Chancellor’s Award and a Qualcomm/DTA Studentship. | eng_Latn | 5,103 |
Fluctuation Theory for Space‐Charge‐Limited Currents | A phenomenological fluctuation theory is presented for 1‐dimensional space‐charge‐limited currents in ideal nonmetallic solids. Notwithstanding the essential nonlinearity of the dynamical equation which governs the potential field, the theory is solved exactly for an initial statistical state that is associated with a ... | In this paper the need for advanced modeling and calculation procedures of Power Flow and Short-Circuit calculations caused by connection of electronically coupled energy resources is discussed. Power Flow and Short-Circuit calculations are basic power applications in software packages for transmission and distribution... | yue_Hant | 5,104 |
Twist prevention weatherproof power flexible cable for wind power generation | The utility model discloses a twist prevention weatherproof power flexible cable for wind power generation. The power flexible cable comprises a cable core, wherein an outer sheath layer is arranged outside the cable core; the cable core comprises a plurality of stranded insulated cores; and a filling strip is arranged... | Australian electricity distribution businesses use a vast number of poles in their networks. In making their purchase decisions, they can choose between types of pole. It might come from an old-growth forest or a plantation, or be made from cement, steel or fibreglass. This paper discusses how Australian electricity di... | eng_Latn | 5,105 |
Ranking of Wire Insulation for Spacecraft Use | Insulated wires are important for the reliable supply of electrical energy in aircraft and spacecraft applications. Damage to the wire insulation in the electrical network can lead to a high-current arc burning between the metal conductors of the wire, which may cause a breakdown of the whole electrical system. In the ... | Abstract Reducing the specimen-probe spacing to increase the sensitivity of measurement of weak remanence in geological samples, etc. introduces potential inaccuracies. These are analysed by comparing the field distributions derived for transversely magnetized cylinders with those for dipoles and for nulling coils. An ... | eng_Latn | 5,106 |
A Novel Failure Indicator of Earth Grounding and Short Circuit | A new kind of indicator of earth grounding and short circuit fault is introduced in the paper.This device owns many advantages:The strong and weak power is well isolated by photoelectric device;It is conveniently to be fixed and it costs lower power. | In the light of the present situation that the faults of the resistor braking cabinet of 8G locomotives occur frequently and endanger the safe operation of locomotives,this paper analyzes the reasons of the faults from equipment's working principles,and according to the actual feasibility,puts forward the transformatio... | eng_Latn | 5,107 |
THE METALWORKING BEHIND OUR FIRST NUCLEAR POWER STATION. PART 2. NOTHING BUT WELDING PERFECTION PERMITTED | The welding performed in the manufacture of the NPD-2 nuclear power station is described. For welding operations on both the calandria and moderator dump tank, the inert gas-shielded metal-arc process was specified and, wherever possible, fully automatic welding was employed. Every type of weld point was completely pro... | The paper introduces a detection and guard system based on Lon Works technology and power line carrier wave for the state of railway device box. It describes the design thought and method of the system. | yue_Hant | 5,108 |
Time domain analysis of transient grounding resistance of various grounding electrodes | In this paper,the time domain analysis of transient grounding resistance(TGR)of grounding electrode is conducted with finite-difference time-domain(FDTD)method.The TGR of various grounding electrodes under pulsed discharging current are calculated,and the influence of the variations of grounding electrode on the TGR is... | Natural resource preservation has recently become a significant concern,and has motivated research and development efforts to assist in both conservation and management.Electricity usage in residential and commercial buildings represents a significant fraction of total energy expenditure.A key prerequisite for energy c... | eng_Latn | 5,109 |
Why is electrical cords covered in rubber or plastic? | Why is there a rubber covering around the cord of an electrical appliance? | Why is there a rubber covering around the cord of an electrical appliance? | eng_Latn | 5,110 |
What damge can an electric shock do to you? | What electrical shock current can cause interference with the nervous control system? | Why are wooden roller coasters slower than electric roller coasters? | eng_Latn | 5,111 |
When electric power is transmitted over long distances line losses can be reduced by generating ac rather than dc voltage and by transmitting? | Why is it advantageous to transmit electrical power to long distance at high voltage? | Why is it advantageous to transmit electrical power to long distance at high voltage? | eng_Latn | 5,112 |
What did Michael Faraday do in his lifetime? | Was michael faraday a butcher? | What were michael faraday's accomplishments? | eng_Latn | 5,113 |
With the widespread establishment of electrical grids , power transmission is usually associated most with electric power transmission . | With widespread establishment of power grids , power transmission has came to be associated most often with electric power transmission . | Experimenters use the following elements that are used in beamlines for conditioning the radiation beam between the storage ring and the end station : The combination of beam conditioning devices controls the thermal load ( heating caused by the beam ) at the end station ; the spectrum of radiation incident at the end ... | eng_Latn | 5,114 |
Does this block the other outlet receptacle? | I put it in the upper socket and the lower socket is totally accessible, however the other way around it would be blocking the other outlet. | measure the distance between the two prongs and see if the measurement is the same as the measurement given in the picture, if the measurement is the same then I would guess it should fit. | eng_Latn | 5,115 |
Will this unit work for High Tech Humane Contain HC-8000 contanment fence? | I am an electrician and have pretty good understanding of how lightning works. I would not have any wire in the ground without a protector unit. Nothing can guarantee 100% protection when it comes to lightning, but I feel this unit is as safe as it gets. Thanks, Don. | I don't know, but do an internet search for Huck's Products, email the owner Randy, and he will be able to tell you. If it isn't a perfect fit out of the box, Randy will have a way to modify it very inexpensively. He has kept my Total Gym Elite, from 2005, in great working order -- very inexpensively. He sent me plasti... | eng_Latn | 5,116 |
Any advantage over a traditional power strip or surge protector with an on/off switch? | Spacially, these are small, without the length and the cord of the surge protector. I attach them to the end of a single cord and move them with the appliance (window fan for instance). Because of the way they are designed, you can use 2 on an outlet: one doesn't get in the way of the other place to plug-in. Sometimes ... | Good point. I am on the verge of buying 2 of the airport express. One for the living room and the other for my bedroom. The one difference I would see is that airport express has only a single Analog out (RCA jack).. while compared to this squeeze box - as optical out and L/R output. Before I drop $200 on two of the ai... | eng_Latn | 5,117 |
does the folding solar panel need to be protected, If not plugged in, from solar flare or emp? | I merely protect the surface of the panels from scratching, by housing the panels in the cardboard box it was shipped in. The panel surfaces fold outward, rather than inward, hence vulnerable to scratches. I have not done anything to protect them from an environmentally-induced current. | This is really well engineered. There is elastic inside and then two sets of snaps outside for different size wrists. I have short arms, so when it is not rainy hard I roll the flap up that covers the back of the hand past the elastic and the snaps. For me it is a very clever functional design. I am impressed with it. | eng_Latn | 5,118 |
Can you feel the wires if you lay on top of the blanket? | You are not supposed to lay on top of an electric blanket, and no I've never done it, I would think you would feel them though. | Absolutely NOT! As others here advise of overload IF you should have a FIRE your Insurance company may have a clause in your contract - If you do something to contribute to that Fire - even IF you were unawares of the danger in that act - they will not pay you for damage or worse destruction to your home. The device pr... | eng_Latn | 5,119 |
Are they sensitive to minor power surges? I had to replace a couple of Netgear XE102 plug in units for that reason. Are these less prone to failure? | I know I had a power surge a few weeks back that destroyed a few of my surge protectors but my netgear plugs still seem to be working fine although I have not done any intense network tests to prove it one way or the other. | I have never needed an adapter. This GE GXRTQR filter with the snap in ends (both-ends) has worked each time for me. You might look at Filtersfast.com as they have alternatives for this GXRTQR filter but I found ordering my last batch through Amazon proved less expensive & quicker for the same filter. | eng_Latn | 5,120 |
Ontology-based models in pervasive computing systems | The Cricket location-support system | Improving electromagnetic compatibility performance of packages and SiP modules using a conformal shielding solution | eng_Latn | 5,121 |
Evaluation of grade prediction using model-based collaborative filtering methods | Next-term student grade prediction | Measurement of AT electric railway system currents at power-supply frequency and validation of a multiconductor transmission-line model | eng_Latn | 5,122 |
EMI Filter Design and Stability Assessment of DC Voltage Distribution based on Switching Converters | The design of DC power distribution for LHC front-end electronics imposes new challenges. Some CMS sub-detectors have proposed to use a DC-power distribution based on DCDC power switching converters located near to the front-end electronics. DC-DC converters operate as a constant power load. They exhibit at the input t... | A proposed Engineering Change (EC) can affect several lifecycle-wide components. Enterprises plan detailed evaluation of only those changes or effects that may have a significant impact. Using past knowledge of engineering changes can prove effective in determining whether an effect is significant. However, comparing E... | eng_Latn | 5,123 |
An electrical telegraph is a telegraph that uses electrical signals , usually conveyed via telecommunication lines or radio . | The electrical telegraph is a telegraph that uses electric signals . | Hackers use two methods of delivering malicious code through IM : delivery of virus , trojan , or spyware within an infected file , and the use of `` socially engineered '' text with a web address that entices the recipient to click on a URL that connects him or her to a website that then downloads malicious code . | eng_Latn | 5,124 |
How do I prepare myself for a job of electrical engineer? | How should I prepare for a job in electrical engineering? | How can I survive from an EMP attack to the grid? | eng_Latn | 5,125 |
BRIEF-Funds advised by Apax Partners to buy ECi Software Solutions | Aug 14 (Reuters) - Apax Partners:
* Funds advised by Apax Partners to acquire ECi Software Solutions
* Says concurrent with the transaction, Macola, JobBOSS, MAX businesses of Exact Software will be combined with ECi
* Carlyle will retain a minority ownership position in combined company
* Current ECi senior manageme... | London, UK, – Trade Facilities Services announces to provide Electrical Safety Certificate for the Landlords of London and Essex. They are also offering Landlord Periodic Inspection Report to assure the property and all electrical appliances are safe for tenants.
Electrical Installation Condition Report is very importa... | eng_Latn | 5,126 |
Is it safe to unplug a UPS during operation? | Testing a UPS by unplugging it from the wall | Empty intersection and empty union | eng_Latn | 5,127 |
what is instrument mechanic and electrician? | 'ag_iitkgp' almost has it right. When I started out many moons ago in the field of instrumentation, I was for ever being asked "What is that then"? First an 'instrument' is a device used to control or measure variables such as pressure temperature flow level etc etc. In those days ' instrument mechanic' looked after... | Insulated overalls, coveralls.....Steal toes are a must have on any rig. If you have to purchase your own clothing, go with Carhart. Do not buy cheap work clothes or boots, there is a big difference. | eng_Latn | 5,128 |
How does oscillations at low frequency limit power transfer in transmission line? | How do oscillations at low frequency limits power transfer over transmission lines? | What are the short term & long term effects of discontinuing Rupees 500 & 1000 notes? How will it tackle corruption? | eng_Latn | 5,129 |
functions of a baler | Key Functions of a Baler The earliest use of balers was on farms where they were employed to compress hay, straw, and cotton into compacted bales that were easily transportable. Most balers are fitted with a pickup device that helps with the process of harvesting hay by feeding the harvested hay into the balers. | A balun is an electrical transformer that is used to convert electrical signals to and from balanced and unbalanced signals. They are normally used to connect lines that have different levels of impedance and are commonly used in the home for connecting HD and traditional antennas. | eng_Latn | 5,130 |
Used by some trains, "Maglev" is short for this | maglev train | transportation | Britannica.com Mar 22, 2016 ... Maglev trains were conceptualized during the early 1900s by American. ... but the magnets are used to repel the train from the guideway rather than attract them. ... the ability to conduct electricity for a short time after power has been cut. ... and a n... | Gustav Mahler - Wikipedia Gustav Mahler was an Austrian late-Romantic composer, and one of the leading conductors of .... It is not known whether he saw any of Wagner's operas during his student years. ..... house and cleared its debts, but had won few friendsit was said that he treated his musicians in the way a lion... | eng_Latn | 5,131 |
What region within a capacitor develops an electric field? | A capacitor consists of two conductors separated by a non-conductive region. The non-conductive region is called the dielectric. In simpler terms, the dielectric is just an electrical insulator. Examples of dielectric media are glass, air, paper, vacuum, and even a semiconductor depletion region chemically identical to... | A new approach to avoiding overhead wires is taken by the "second generation" tram/streetcar system in Bordeaux, France (entry into service of the first line in December 2003; original system discontinued in 1958) with its APS (alimentation par sol – ground current feed). This involves a third rail which is flush with ... | eng_Latn | 5,132 |
What part of the current is usually strongest? | Returning to the basic concept of current flows in a conductor, consider what happens if a half-wave dipole is not connected to a feed point, but instead shorted out. Electrically this forms a single 1⁄2-wavelength element. But the overall current pattern is the same; the current will be zero at the two ends, and reach... | The London Underground in England is one of the few networks that uses a four-rail system. The additional rail carries the electrical return that, on third rail and overhead networks, is provided by the running rails. On the London Underground, a top-contact third rail is beside the track, energized at +420v DC, and a ... | eng_Latn | 5,133 |
Book title with a harsh alien world and buoyant balloon-like beings I specifically remember that those buoyant explosive gas filled balloons were an annoyance for flying ships. This is mentioned several times in the book. At the end they seemed to play a very important role in the plot. I also remember ground based pre... | Science Fiction novel or novels about starship that becomes a god, colonizes hostile planet Plot Summary/Details The sharpest memory I have of this one is that it was unusually dense reading. Much more difficult going than most of the sci-fi stuff I'd read by that time (I was 10 or 11, I think). What I remember in te... | What are these fuse-looking cartridge case components on small, battery operated RF tranceivers? I have recently opened up 3 dead, battery-operated RF transceivers lying around, both wearable and key-chains. I've noticed that all three had components that looked like fuses (cartridge case), soldered down, that are quit... | eng_Latn | 5,134 |
What invention prevented lines from getting mixed? | To prevent the risk of out-of-phase supplies mixing, sections of line fed from different feeder stations must be kept strictly isolated. This is achieved by Neutral Sections (also known as Phase Breaks), usually provided at feeder stations and midway between them although, typically, only half are in use at any time, t... | The predominant school of thought in the 13th century was the Thomistic reconciliation of the teachings of Aristotle with Christian theology. The Condemnation of 1277, enacted at the University of Paris, placed restrictions on ideas that could be interpreted as heretical; restrictions that had implication for Aristotel... | eng_Latn | 5,135 |
What is another name for electric-field? | The polarization of an antenna refers to the orientation of the electric field (E-plane) of the radio wave with respect to the Earth's surface and is determined by the physical structure of the antenna and by its orientation; note that this designation is totally distinct from the antenna's directionality. Thus, a simp... | Sociological attention to emotion has varied over time. Emilé Durkheim (1915/1965) wrote about the collective effervescence or emotional energy that was experienced by members of totemic rituals in Australian aborigine society. He explained how the heightened state of emotional energy achieved during totemic rituals tr... | eng_Latn | 5,136 |
How do I accept Jesus Christ? | First shut down your brain, then you can accept anything! | staying inside a 'Faraday Cage' is a good first step. Look up Faraday Cage in Wikipedia | eng_Latn | 5,137 |
Make an Electric Fence | Electric fencing can be dangerous but are a helpful tool for people who own farm livestock or horses. Electric fencing are necessary in order to keep animals safe and contained within the fence. | Have you ever wanted to see your own robot car roving around? Build one with a few electronics parts, an Arduino microcontroller, and copy-paste programming. | eng_Latn | 5,138 |
what is swa | Commonly known as SWA cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. What is an SWA Cable? Commonly known as SWA cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. Used for... | Commonly known as SWA cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. What is an SWA Cable? Commonly known as SWA cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. Used for... | eng_Latn | 5,139 |
what glove rating is required for electrical work | Insulating Gloves and Sleeves Insulating gloves and sleeves are critical PPE for electrical work on or near exposed energized parts. The 269 standard (1910.269(l)(2)(i) and (l)(3)) requires that: Additionally, 1910.137 provides specific design, care, and use requirements for rubber electrical protective equipment. Insu... | Energized work on electrical systems is performed in a number of ways: 1 Typically workers wear insulating (rubber) gloves (with protectors) and also insulating sleeves (if required) when working on live systems. | eng_Latn | 5,140 |
is conduit raceway | With the standard wall thickness of EMT and the strength of steel, Allied Tube & Conduit®âs EMT Conduit and elbows create an Electrical Raceway System recognized as an equipment grounding conductor. EMT conduit is a raceway solution which allows for future wiring changes and provides excellent mechanical protection ... | Conduit is a browser hijacker that is usually installed without the userâs knowledge through a drive-by download. The malware, which is frequently bundled with freeware and shareware, presents as a browser toolbar and search engine. Once installed, Conduit changes the userâs default browser home page and search eng... | eng_Latn | 5,141 |
which class of fire involving energized electrical equipment | Class C fire means a fire involving energized electrical equipment where safety to the employee requires the use of electrically nonconductive extinguishing media. Class D fire means a fire involving combustible metals such as magnesium, titanium, zirconium, sodium, lithium and potassium. | Approach Boundaries to Energized Electrical Conductors Table. (Data from 2015 Editions of NFPA 70E Table 130.4 (D)(a) and CSA. Z462 Table 1A) Personnel Protective Equipment Matrix Table. (Data from 2015 Editions of NFPA 70E Table H.3(b) and. CSA Z462 Table H.2) | eng_Latn | 5,142 |
cause and effects of electrical pollution | earth currents and transients and high frequency noise are sources that cause electrical pollution. Electrical pollution can be one of these causes or a combination of the causes. What you should know about electrical pollution - 1 Stray voltage is also a cause of electrical pollution. and off farms in localized areas.... | The health effects of electrical pollution antennae for the current, silently and insidiously assaulting those who play and work nearby. In other words, the wires that deliver electricity have also become conduits for deadly high-frequency radiation, a form of electrical pollution that has largely escaped attention by ... | eng_Latn | 5,143 |
different types of electrical injuries | Humans are more conductive than the earth (the ground we stand on) which means if there is no other easy path, electricity will try to flow through our bodies. There are four main types of injuries: electrocution (fatal), electric shock, burns, and falls. | What are the types of electrical shock injuries? Answer According to the Centers for Disease Control and Prevention (CDC), there are four main types of injuries that can occur as a result of exposure to electricity: fatal electrocution, electric shock, burns, and falls caused by contact with electrical energy. | eng_Latn | 5,144 |
what does emt mean in electrical terms | Conduits: Electrical Metallic Tubing (EMT). Another example of rigid electrical conduit is the EMT, also known as Electrical Metallic Tubing. An EMT conduit is made of steel; in some cases aluminum is also used, cheaper than a galvanized rigid conduit and lighter than a GR conduit. conduit made form galvanized steel tu... | EMT Basic (also known as EMT I) represents the first component of the Emergency Medical Technician system. An EMT I is trained to care for patients at the scene of an accident while transporting patients by ambulance to the hospital under medical direction. An EMT I has the emergency skills to assess a patients conditi... | eng_Latn | 5,145 |
what category is an electrical fire | Class C or Class E: Electrical [edit]. Electrical fires are fires involving potentially energized electrical equipment. The US system designates these Class C; the Australian system designates them Class E. This sort of fire may be caused by short-circuiting machinery or overloaded electrical cables. | electrical or electrical apparatus exemption clause. A clause that provides that damage to appliances stemming from electrical currents is only covered if a fire starts. | eng_Latn | 5,146 |
what is a busbar | A busbar is a grounded strip of copper or aluminum that conducts electricity, which acts as a current collector or distributor. These strips can vary in thickness and length, depending on the electrical load it will be assigned to carry. Busbars are used to distribute current to different areas within switchgear. | busbars can have a cross sectional area of as little as 10 square millimetres 0 016 sq in but electrical substations may use metal tubes 50 millimetres 2 0 in in diameter 20 square millimetres 0 031 sq in or more as busbars | eng_Latn | 5,147 |
what is an electrical box | Electrical boxes provide safe links to wiring systems and devices in nearly every structure. Choosing the right type of box and following building codes are key to ensuring your project is strong and secure. Graybar stocks a variety of metallic and non-metallic electrical boxes, including weatherproof boxes, junction b... | an opening or passage by which anything is let out; vent; exit. Electricity. a point on a wiring system at which current is taken to supply electric devices. Also called outlet box. the metal box or receptacle designed to facilitate connections to a wiring system. | eng_Latn | 5,148 |
(In electrics) what is resonance? | What is electrical resonance? | How do I calculate the RM cable requirement from ampere rating? | eng_Latn | 5,149 |
DC Hot Stick developed for first responder, worker safety | ORNL's Bruce Warmack (left) and Nance Ericson display an early prototype of the DC Hot Stick. Credit: Carlos Jones, ORNL/Dept. of Energy With more volts than ever before in electric vehicles (EVs) and on solar-paneled rooftops, first responder and electrical worker safety is a growing concern. Researchers at the Depart... | HOUSTON - A bomb squad was called Wednesday evening for a suspicious package found on a sidewalk in Montrose.
The Houston Police Department was investigating if the package, seen on Graustark and Marshal Street, is a pipe bomb.
Officials said inside the package were several prayer candles and a phone charger. They beli... | eng_Latn | 5,150 |
1980s 'D' Maxell Super Power Ace Red batteries have rusted solid .
His parents hate the musical decoration and try and hide it from their son . | By . Sean O'hare . PUBLISHED: . 12:23 EST, 21 December 2012 . | . UPDATED: . 14:24 EST, 21 December 2012 . Mike Barham with 30-year-old musical Father Christmas that's still running on original batteries . A 30-year-old musical Father Christmas decoration miraculously still plays a tune despite its original batteries h... | Engineers at Duke University have designed a breakthrough gadget that 'harvests' background microwave radiation and converts it into electricity, with the same efficiency as solar panels. The development, unveiled on Thursday, raises exciting possibilities such as recharging a phone wirelessly and providing power to re... | eng_Latn | 5,151 |
What is the typical value of earthing resistance? | What is typical value of earthing resistance? | Can extremely low radio frequencies (ELF) pass through INTERPLANETARY and INTERSTELLAR medium? do some of them pass through it? | eng_Latn | 5,152 |
Why would a transmitter have additional adjustments? | Maximum power transfer requires matching the impedance of an antenna system (as seen looking into the transmission line) to the complex conjugate of the impedance of the receiver or transmitter. In the case of a transmitter, however, the desired matching impedance might not correspond to the dynamic output impedance of... | When optimally designed within a given core saturation constraint and for a given active current (i.e., torque current), voltage, pole-pair number, excitation frequency (i.e., synchronous speed), and air-gap flux density, all categories of electric motors or generators will exhibit virtually the same maximum continuous... | eng_Latn | 5,153 |
From where is current to the motor supplied? | A commutator is a mechanism used to switch the input of most DC machines and certain AC machines consisting of slip ring segments insulated from each other and from the electric motor's shaft. The motor's armature current is supplied through the stationary brushes in contact with the revolving commutator, which causes ... | Unpopulated boards are usually bare-board tested for "shorts" and "opens". A short is a connection between two points that should not be connected. An open is a missing connection between points that should be connected. For high-volume production a fixture or a rigid needle adapter is used to make contact with copper ... | eng_Latn | 5,154 |
I'm covering my workbench with a ESD mat (3100x900mm.) I will also install 4 x ESD Sockets under the workbench (see below.) I will connect everything to an ESD EU plug: In the end the mat and sockets will both connect to EU ESD plug. My real question is if there's a problem with that connection. The ESD sockets alrea... | I have a hard time finding a how-to. I would like to set up a simple ESD mat and wrist wrap, but I am not sure about is the the 1 MOhm resistor should be, if at all. Several options: 1 MOhm from ground outlet to the mat, wire from the common earthing on the mat to the wrist wrap. 1 MOhm from ground outlet to the ma... | I have a hard time finding a how-to. I would like to set up a simple ESD mat and wrist wrap, but I am not sure about is the the 1 MOhm resistor should be, if at all. Several options: 1 MOhm from ground outlet to the mat, wire from the common earthing on the mat to the wrist wrap. 1 MOhm from ground outlet to the ma... | eng_Latn | 5,155 |
What can happen to capacitors used in high current applications? | Capacitors may catastrophically fail when subjected to voltages or currents beyond their rating, or as they reach their normal end of life. Dielectric or metal interconnection failures may create arcing that vaporizes the dielectric fluid, resulting in case bulging, rupture, or even an explosion. Capacitors used in RF ... | Many assembled PCBs are static sensitive, and therefore must be placed in antistatic bags during transport. When handling these boards, the user must be grounded (earthed). Improper handling techniques might transmit an accumulated static charge through the board, damaging or destroying components. Even bare boards are... | eng_Latn | 5,156 |
How do I determine if my laptop battery driver is bad, or if I have a bad battery? Battery will not charge at all. Read somwhere that it could be the battery driver, but I don't know how to assess that. Any help appreciated. | Is there any utility to check whether my laptop battery is in healthy condition or not? Is there any utility available on Ubuntu to check whether laptop battery is in healthy condition or not? | How does the tester screwdriver work? How does the tester screwdriver work? If I put the tester screwdriver inside the "hot wire" of an electrical socket, it lits up if I press my finger against the metal cap on top of the screwdriver. This happens also if I stand on a surface of isolating material, such as wood. I rea... | eng_Latn | 5,157 |
Choose a Surge Protector | Power surges can potentially damage electronic devices if not adequately protected. Surge protectors provide protection against power surges, which are an electrical power spike that can burn up the electrical circuits within electronics and appliances in addition to damaging electrical outlets and light switches throu... | Turn your last breath of oxygen into minutes for Escape and Rescue... | eng_Latn | 5,158 |
MTG - Cards that share names stack abilities? Ability: When enters the battlefield you get {E}{E}. Does this mean if I already have one aether poisoner on the field and I play a second that the ability will stack and I'll get {E}{E}{E}{E}? If the answer to the previous question in yes, then consider the following: ... | Identical creatures entering the battlefield If I have two cards called in hand and I play my first, Sin Collector (A). I use its triggered ability. "When Sin Collector enters the battlefield, target opponent reveals his or her hand. You choose an instant or sorcery card from it and exile that card." Now, I play Si... | Can a bird, previously at earth potential, get electrocuted by landing on a powerline at high-enough voltage due to the initial "equalization charge"? At the voltage levels of typical overhead transmission lines in the US, a bird can land on one and be just fine (as long as it doesn't do something like spread its wings... | eng_Latn | 5,159 |
What happens to electromagnetic field when crossing event horizon | What do you feel when crossing the event horizon? | Why can two (or more) electric field lines never cross? | eng_Latn | 5,160 |
Parallel Capacitor Conundrum I have recently taken on a project that involves improving a circuit and there is a couple of instances where there are two capacitors in parallel with each other. The values of these capacitors are 100nF and 100pF so one is average sized while the other is small. The instances of these ... | What's the use of a decoupling capacitor near a reservoir capacitor? I've seen some circuits where a decoupling capacitor is used as well as a reservoir capacitor, like this (C4 and C5): I've read about and for me it looks as if they are meant to remove small fluctuations in the supply voltage. Then I thought - was... | Socket Tester all indicators light up I used the above GFCI/RCD (up to 250v) socket tester on the 240v black and red live wire of the US split phase ac power system. When I connect the ground, all indicator lights (3 red) got on indicating "Live/Grd Reverse, Missing GRD" although it is connected properly. What is insi... | eng_Latn | 5,161 |
Installing electrical box in 2x4 I'm designing a custom headboard for our bed and I want to install electrical into the cubbies I am making in the headboard (primarily for cell phone charging). In my current design, the electrical box would be installed into a cut out 2x4. I've attached two sketchup models for referen... | How to add electrical fixtures to (custom) furniture? Having electrical outlets, USB charging ports, night lights, etc would be nice to have on some pieces of furniture, like side tables. Several receptacle manufacturers make combination fixtures with USB and power, for instance, or power plus a night light. I've tho... | Socket Tester all indicators light up I used the above GFCI/RCD (up to 250v) socket tester on the 240v black and red live wire of the US split phase ac power system. When I connect the ground, all indicator lights (3 red) got on indicating "Live/Grd Reverse, Missing GRD" although it is connected properly. What is insi... | eng_Latn | 5,162 |
Will debugging damage my battery? I work as a Android developer and I use my own phone for debugging as well as some other devices. Keeping the phone connected with USB will automatically charge my phone but will my battery be damaged by being connected 8~ hours at night and 8~ hours at work every day? | Does constant charging harm my Android cellphone? I usually disconnect my cellphone from the charger some time after it's fully charged because I'm afraid the battery could lose capacity over time if I don't. However, I believe modern electronics should be able to handle this kind of scenario and automatically stop cha... | How does the tester screwdriver work? How does the tester screwdriver work? If I put the tester screwdriver inside the "hot wire" of an electrical socket, it lits up if I press my finger against the metal cap on top of the screwdriver. This happens also if I stand on a surface of isolating material, such as wood. I rea... | eng_Latn | 5,163 |
what does electromagnetic mean? | Electromagnetic is a term that refers to electric and magnetic fields. Since they are actually one and the same thing, they are collectively called electromagnetic. | Edison Carter was one of the main characters in the science fiction television series Max Headroom. A hard-hitting reporter for Network 23, he sometimes came close to uncovering things that his superiors in the network would've preferred to keep private. Eventually, one of these instances required him to flee his works... | eng_Latn | 5,164 |
How long could you survive in Space without a Spacesuit? Contrary to popular belief, and numerous Hollywood movies, you could survive unprotected in space for over a minute - provided you could get back to medical care immediately after. Moreover, in movies we see astronauts and people in spaceships opening doors and ... | How does space affect the human body (no space suit, no space craft) How does "outer space" affect the human body? Some movies show it as the body exploding, imploding or even freezing solid. I know space is essentially a vacuum with 0 pressure and the dispersion of energy makes it very cold. So are the predictions a... | How can I safely prototype a mains power circuit? I'm building a device that has a mains power component, which I need to prototype before building to make sure everything works. I know I need to make sure wiring—and insulation!—is thick enough to cope with the higher current, and that I need to make sure there's enoug... | eng_Latn | 5,165 |
Survive an EMP | An Electromagnetic Pulse, or EMP, is a sudden burst of electromagnetic radiation. The sudden change in energy levels can, and will, literally fry electrical circuits of computers, cars and other electrical appliances. | Even if you can't wait to live in your new house, curb your enthusiasm and resist the urge to cram all your possessions any which way into boxes. | war_Latn | 5,166 |
That is the question that I am asking you today. | staying inside a 'Faraday Cage' is a good first step. Look up Faraday Cage in Wikipedia | great...now that song will be in my head all day long! | eng_Latn | 5,167 |
more relations between grid system and atmospheric discharges | Other than direct discharges from lightning, fluctuations in the magnetic field can generate currents in the electrical grid. This happens as a result of solar activity such as solar wind and flares bombarding the Earth's magnetic field causing it to flex.\n\nLong distance transmission lines are especially vulnerable ... | Let's see:\nThe triboelectric effect is only related to friction because they both involve adhesion. However, the effect is greatly enhanced by rubbing the materials together, as they touch and separate many times to create an electric charge.\n\nSo, yes. | eng_Latn | 5,168 |
that from high-voltage power transmission lines? | Nonionizing radiation is electromagnetic radiation that includes: \n\nRadio waves \nMicrowaves \nInfrared light \nVisible light \nHazards of Nonionizing Radiation\n\nUnlike ionizing radiation, nonionizing radiation does not have enough photon energy to remove an electron from an atom. However, it can still be hazardous... | get rid of the carpet? cover the metal? wear antishock bracelets? find some way to nuetralize yourself when you enter? | eng_Latn | 5,169 |
what is positive and what is negative?\nwhether positive carries positive current?,negative carries negative current.?\nThen What is positive current what is negative current?\nwhether if we touch positive current what happen?\nwhether if we touch negative current what happen? | AC stand for alternating current. AC current can oscillate at whatever frequency (# times per second, usually expressed in Hertz, Hz) you want it to. However, the power that comes into your house oscillates at 60 in the US and 50 in Europe. This has to do with the development of electricity. They had to sync up the... | The only reason you get shocked when you touch one phase and ground in the commercial power distribution system is because the commercial power distribution system uses a grounded system where the earth itself is used instead of a wire. Commercial power distribution I believe (and I may be wrong on this) uses Wye (pro... | eng_Latn | 5,170 |
Why can't two electrical field lines intersect each other? | Why can two (or more) electric field lines never cross? | What happens when identical overlapping effects have their end-condition met? | eng_Latn | 5,171 |
Do supply lines work together? | What, exactly, is transferred along supply lines? | Why can two (or more) electric field lines never cross? | eng_Latn | 5,172 |
if i put a live wire with high voltage current running through it in the ocean, would it electrocute the world | Yeah, okay. So it works like this, \n\nYou get a shock when you touch a live wire, or, say, a charged conductor (like a sister rubbing her rubber soled slippers on the carpet) because that conductor has an excess of electrons. These electrons (the electrical charge) are trying to get to the ground (you can think of t... | yeah , first thing kill the dumbos who preach to the third world countries the birth control is wrong.Not one person is left out? Hoohoo Dodo, how we gonna feed the personell the military has right now? Great idea ,really great feed africa , let americans starve. Heres one from me "STOP SMOING DOPE" THE ATTACKS ON 9/11... | eng_Latn | 5,173 |
Hi i am wondering how you go about testing a lightning protection system. I know i can test the system if i have 230volts and an electrical loop impedance tester, but how do i test it if i don't have any mains power and i think a generators voltge would be to unstable.\n\nany help would be much appreciated\ncheers!!! | As a rough test use a megger to test resistance from lightning rod(s) to an independent earth spike. | Is this in state court or in federal court? In state court, the Iowa sentencing scheme is "indeterminent," meaning, that execpt for low-level crimes where a sentence is for less than a year, the court sentences only to a range of punishments; the parole board determines your actual release date based on individual fac... | eng_Latn | 5,174 |
Hardware Trojan detection using path delay fingerprint | Differential Power Analysis | High-resolution pulsed electro-acoustic (HR PEA) measurement of space charge in outer space dielectric materials | eng_Latn | 5,175 |
them refers to good conductor and dielectrics.\nthanks in advance for your answers. | The earth is actually, as a whole, a conductor, mostly because there's a lot of earth to be a source and sink of charge. That's why many high power appliances have a third prong to plug into the wall called a "ground" (the round one below the the two flat prongs). That does actually connect into the earth. That way, if... | Slang words are nothing new. There have always been slang or vulgar words. (the word vulgar originally referred to the language of the "commoners," common people.) I do honestly believe that most men behave decently. It's only the few who don't that you hear about. | eng_Latn | 5,176 |
ralted to electricity | Electric Discharge Machine | As a rough test use a megger to test resistance from lightning rod(s) to an independent earth spike. | eng_Latn | 5,177 |
Sampled values packet loss impact on IEC 61850 distance relay performance | Teaching Distance Relay using Matlab/Simulink Graphical user Interface | The Testing Effect Is Alive and Well with Complex Materials | eng_Latn | 5,178 |
PowerHammer: Exfiltrating Data From Air-Gapped Computers Through Power Lines | Power line communication in IoT-systems | The EM Side-Channel(s) | kor_Hang | 5,179 |
breaking keeloq in a flash ⋆ - . | Differential Power Analysis | Electromagnetic Analysis: Concrete Results | eng_Latn | 5,180 |
hello...Can u describe your understanding about role of elektromagnetic play in science and technology..? | Electromagnetism is the what allows information contained in electric circuits to actually leave the circuits. Althought he technique by which the information (electric signal) actually leaves the circuit is quite complicated, suffice it to say, that using an antenna, this information can be allowed to travel through a... | Actually what you want to build is an electric *motor*, not an electric *engine*. By definition, an engine has a number of working parts that move sychronously, whereas a motor is a simple moving machine (my English teacher nailed me on this back in the 12th grade and I've never forgotten it).\n\nBut nevermind all tha... | eng_Latn | 5,181 |
What are Michael Faraday's major findings on candles? | If by candles you mean light, He did experiments on whether or not magnetic fields could influence light. He discovered it did, but only with led glass not flint, rock crysal or calcareous spar. He is quoted as saying "Thus magnetic force and light were proved to have relation to each othere. This fact will likely p... | It's a lie, it's like cell phones causing gas stations to blow up. I work for a package delievery service and we ship optic mice, cell phones and what not all the time, and if something edmits radioactivity it's required to be labeled, even if it doesn't emit the radiation when it's turned off. the only thing you have ... | eng_Latn | 5,182 |
mathematical proof of the existence of static electricity? | 2*(feet + carpet)*shuffling = ZAP! | So you are doing some numerical analysis... if you have a spreadsheet program you can use that. Use the trapezoid rule or Simpson's rule for some small increment in x. Your spreadsheet program is able to evaluate arctan. The second question can be evaluated with Newton's method. | eng_Latn | 5,183 |
Does anyone know any details about the Electromagnetic Bomb? | An electromagnetic bomb or E-bomb is a weapon designed to disable electronics on a wide scale with an electromagnetic pulse. The electromagnetic pulse was first observed during high altitude nuclear weapon detonations. An electromatic pulse lasts for less than a nanosecond, and travels outward in every direction as an ... | Yeah when i was 18. She was i rite nutjob!!! E-mail me if u want & i'll tell u a bit more. | eng_Latn | 5,184 |
The Ferranti effect is when the receiving end voltage is larger than the sending end voltage. How can you do that? What is the explanation for this? | Why does the Ferranti effect increase the receiving end voltage when compared with the sending end voltage? | Why do we use high voltage to transmit electrical power? | eng_Latn | 5,185 |
What IS the REASON WHY BIRDS are NOT ELECTROCUTED ON POWER LINES? | Why don't birds get electrocuted sitting on power lines? | Do batteries run out even if they are not being used? | yue_Hant | 5,186 |
Comparing static bug finders and statistical prediction | Using Static Analysis to Find Bugs | SPICE Models to Analyze Radiated and Conducted Susceptibilities of Shielded Coaxial Cables | eng_Latn | 5,187 |
IEC 61850 Standard Based MMS Communication Stack Design Using OOP | Substation automation system using IEC 61850 | iec 61850 communication networks and systems in substations : an overview for users . | kor_Hang | 5,188 |
Modelling and Simulation of Electric Vehicle Fast Charging Stations Driven by High Speed Railway Systems | system design for a solar powered electric vehicle charging station for workplaces q . | Physical Activity Over the Life Course and Its Association with Cognitive Performance and Impairment in Old Age | eng_Latn | 5,189 |
Estimation of receivable distance for radiated disturbance containing information signal from information technology equipment | Compromising Emanations: Eavesdropping Risks of Computer Displays | Examining smart-card security under the threat of power analysis attacks | eng_Latn | 5,190 |
How can I survive EMP attack? | How can I survive from an EMP attack to the grid? | How is it living off the grid in India ? | eng_Latn | 5,191 |
Substation automation system using IEC 61850 | Object Modeling of Data and DataSets in the International Standard IEC 61850 | Exploiting partially overlapping channels in wireless networks: turning a peril into an advantage | eng_Latn | 5,192 |
plug - in hybrid electric vehicles and smart grid investigations based on a microsimulation . | vehicle - to - grid power fundamentals : calculating capacity and net revenue . | Bone extraction in X-ray images by analysis of line fluctuations | eng_Latn | 5,193 |
how does the static switch work in a ups | The diagram in Figure 2 shows a static bypass switch connected across a UPS. The UPS. could be a double conversion or a delta conversion or rotary type. The static bypass switch. provides a means to accomplish high-speed transfer to the bypass path in case of UPS. | An electrician simply installs a new circuit breaker in the circuit breaker panel and runs a new wire to either a new or existing AC receptacle. When a UPS is used with the critical load, the voltage regulation and circuit breaker tripping prevention features of the dedicated line are rendered unnecessary. | eng_Latn | 5,194 |
what color are ups protected outlets? | NEMA Blue Receptacles. Hubbell Blue NEMA Receptacles. Outlets are Simplex which is a single receptacle for a one gang box. There is a developing installation standard using Blue Color receptacles to Identify UPS supported outlets. Typically only critical equipment receptacles are wired to a UPS supported circuit. With ... | Artwork: Left artwork: Without a surge protector, the hot/live (brown) and neutral (blue) connections provide power to your appliance. The ground (green) connection is typically wired to the metal case to provide a safe way for stray currents to escape, but it's not involved in powering the appliance. | eng_Latn | 5,195 |
what is an electrical contactor | A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit.Contactors come in many forms with varying capacities and features.U... | Control Circuits for Air Conditioning & Heating - How It All Works. The relay or contactor is nothing more than a switch that turns on a motor or compressor. It works through the 24-volt control circuit. Some relays are controlled by other relays depending on the components in the system and the sequence of operation. | eng_Latn | 5,196 |
what protects house from electromagnetic field? | How can you best protect yourself and your loved ones from unwanted electromagnetic fields? As people spend over half of their time at home, this is where you may absorb more electromagnetic radiation than anywhere else. So for best EMF protection, make your home a low-EMF zone. Most of the EMF that people experience a... | Electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials.hielding is typically applied to enclosures to isolate electrical devices from the 'outside world', and to cables to isolate wires from the environment ... | eng_Latn | 5,197 |
definition of photoelectric converters | Photoelectric Isolation Interface Converter can provide 1000W lightning strike and surge protection power on each line. The rapid Transient Voltage Suppressor (TVS) can effectively inhibit lightning and ESD. GC-ATC-107N interface converter DB9 pin PIN5 is designed for surge grounding protection. The user shall try to a... | by Gil Knier. Photovoltaics is the direct conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. | eng_Latn | 5,198 |
why do surge protectors go bad | But the reason they go bad has more to do with their environment than with their age. The protective components inside surge protectors work by either absorbing over-voltage spikes outright or shunting them to ground. This keeps the amount of over-voltage reaching your device(s) to a minimum. | When a surge moves through the electrical circuit in a house or building, the surge protector diverts the energy away from connected electronic devices. Itâs important to understand that not all power strips offer surge protection. | eng_Latn | 5,199 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.