id stringlengths 8 8 | question stringlengths 6 10.2k | choices listlengths 4 4 | answer stringclasses 4 values | rationale stringlengths 0 2.59k | difficulty stringclasses 1 value | source stringclasses 146 values |
|---|---|---|---|---|---|---|
9a0aa491 | Under what condition the number of inversions in an array are maximum? | [
"when the array is sorted",
"when the array is reverse sorted",
"when the array is half sorted",
"depends on the given array"
] | B | Number of inversions in an array are maximum when the given array is reverse sorted. As the necessary condition for an inversion is arr[i]>arr[j] and i<j. | data_structures_&_algorithms_i | |
5eadc144 | The equation dH=Cp*dT holds good for | [
"any process for an ideal gas, even when the pressure changes",
"for other substances it is true only when the pressure is constant",
"both of the mentioned",
"none of the mentioned"
] | A | It depends on temperature and volume only and not on any other thermodynamic property. | thermodynamics | |
7c5626c4 | ARF1 is a _______ binding protein. | [
"carbohydrate",
"GTP",
"GDP",
"ATP"
] | C | Among COPII proteins, Sar1 is a G-protein which initiates vesicle formation and regulates the assembly of the vesicle coat. G-proteins function as molecular switches inside the cells. | cell_biology | |
daf62aa3 | In UNIX, exactly which operations can be executed by group members and other users is definable by _____________ | [
"the group’s head",
"the file’s owner",
"the file’s permissions",
"all of the mentioned"
] | B | None. | operating_system | |
36ca3796 | For BCC Burgers vector is ____ and for FCC ____ | [
"a <hkl>, a <hkl>",
"a <hkl>, (a/2) <hkl>",
"(a/2) <hkl>, a <hkl>",
"(a/2) <hkl>, (a/2) <hkl>"
] | D | For BCC burgers vector is represented as (a/2) <hkl>. For FCC burgers vector is (a/2) <hkl>. While for simple cubic it is a <hkl>. | mechanical_behaviour | |
8999d13b | To find the values at the current time-step, the Crank-Nicolson scheme uses ___________ | [
"t-Δt and t+Δ t steps",
"t-Δ t and t-2Δ t steps",
"t+Δ t and t+2Δ t steps",
"t and t+Δt steps"
] | B | Like the forward Euler scheme, the Crank-Nicolson scheme also uses the older steps only to get the values at the current node. It uses the values at the previous step and at the step previous to it. | computational_fluid_dynamics | |
aaec82d7 | The combination of ideal reactors among the following is ____ | [
"Plug flow reactor and batch reactor",
"Batch reactor and mixed flow reactor",
"Plug flow reactor and mixed flow reactor",
"Batch reactor only"
] | C | Batch reactor is an unsteady state reactor. Plug flow reactor and mixed flow reactors operate under steady state conditions. | chemical_reaction_engineering | |
66340a1e | In a shell and coil type water cooled condenser, the refrigerant is passed through the ________ | [
"Coil",
"Shell",
"Tube",
"Annulus"
] | B | The refrigerant having lesser pressure drop is always considered to be kept at the annulus side of the double pipe setup, hence the cooling water in the inner tube as it faces larger pressure drops and in the tube side of as Shell-and-tube type setup. | heat_transfer_operations | |
0298f1f9 | Which of the following, is a component of an expert system? | [
"inference engine",
"knowledge base",
"user interface",
"all of the mentioned"
] | D | None. | artificial_intelligence | |
29822e6b | Which option is used with pr command to display output along with line numbers? | [
"-d",
"-n",
"-o n",
"-t"
] | C | We can use the -t option with pr command if we want to suppress the headers and associated which are displayed with the output of pr command. For example,
$ dept.lst | pr -t -5 // no headers and footers; multi-columnar output
1 5 9
2 6 10
3 7 11
4 8 12 | unix | |
e22fde13 | If two 14-sided dice one is red and one is blue are rolled, find the probability that a 3 on the red die, a 5 on the blue die are rolled. | [
"\\(\\frac{4}{167}\\)",
"\\(\\frac{3}{197}\\)",
"\\(\\frac{5}{216}\\)",
"\\(\\frac{1}{196}\\)"
] | B | Using the rule of product, there are 196 possible combinations of rolls. Since having the red die = 3 and the blue die = 5 are one of the 196 combinations, the required probability is \(\frac{1}{14}*\frac{1}{14} = \frac{1}{196}\). | discrete_mathematics | |
9535ef88 | What control signals may be necessary to operate a 1-line-to-16 line decoder? | [
"Flasher circuit control signal",
"A LOW on all gate enable inputs",
"Input from a hexadecimal counter",
"A HIGH on all gate enable circuits"
] | B | A LOW on all gate enable inputs is necessary to operate a 1-line-to-16 line decoder because enable pins are usually, active-low pins. | digital_circuits | |
ad255c2a | The mechanism to provide protection, that is accomplished with the help of read/write privileges is | [
"restricted use of segments",
"restricted accesses to segments",
"privileged instructions",
"privileged operations"
] | A | The restricted use of segments is accomplished with the help of read/write privileges. | microprocessor | |
2eb5dc50 | Which algorithm is used to solve a minimum cut algorithm? | [
"Gale-Shapley algorithm",
"Ford-Fulkerson algorithm",
"Stoer-Wagner algorithm",
"Prim’s algorithm"
] | C | Minimum cut algorithm is solved using Stoer-Wagner algorithm. Maximum flow problem is solved using Ford-Fulkerson algorithm. Stable marriage problem is solved using Gale-Shapley algorithm. | data_structures_&_algorithms_ii | |
6b98d296 | In which year the symbol @ was added to the official Morse character set by ITU-R? | [
"2003",
"2004",
"2005",
"2006"
] | A | The symbol $ and & are not defined inside the ITU recommendation on Morse code. International Telecommunication Union is a union that mandated Morse code worldwide. | data_structures_&_algorithms_ii | |
84f26976 | Speed and Position in CNC can be controlled using _____ | [
"slide table and spindle",
"machine code unit",
"feedback system",
"graphic user interface"
] | C | Driving system consists of amplifier circuits, driving motors and ball lead screw. These are used to actuate the driving motors. Speed and position control is provided by machine tools. To understand the position of the tool according to the input program is the function of GUI. | mechatronics | |
7ae728bc | How many points of discontinuities will be there in the SFD? | [
"1",
"2",
"3",
"4"
] | A | Bending moment at point A is +20KN/M. So, curve will start with +20. | structural_analysis | |
83e09ccd | Two straight railway lines meet at right angles. A train starts from the junction along one line and at the same time instant, another train starts towards the junction from a station on the other line and they move at the same uniform velocity.When will they be nearest to each other? | [
"When they are equal distance from the junction",
"When they are in unequal distance from the junction",
"When they form a right angle at the junction",
"Data not sufficient"
] | A | Let OX and OY be two straight railway lines and they meet at O at right angles.
One train starts from the junction and moves with uniform velocity u km/hr along the line OY.
And at the same instant, another train starts towards the junction O from station A on the line OX with same uniform velocity u km/hr.
Let C and B be the position of the two trains on lines OY and OX respectively after t hours from the start.
Then OC = AB = ut km. Join BC and let OA = a km and BC = x km.
Then OB = a – ut.
Now, from the right angled triangle BOC we get,
BC2 = OB2 + OC2
Or x2 = (a – ut)2 + (ut)2
Thus, d(x2)/dt = 2(a – ut)(-u) + u2(2t)
And d2(x2)/dt2 = 2u2 + 2u2 = 4u2
For maximum or minimum value of x2(i.e., x) we must have,
d(x2)/dt = 0
Or 2(a – ut)(-u) + u2(2t) = 0
Or 2ut = a [Since u ≠ 0]
Or t = a/2u
Again at t = a/2u we have, d2(x2)/dt2 = 4u2 > 0
Therefore, x2(i.e., x) is minimum at t = a/2u
Now when t= a/2u, then OC = ut = u(a/2u) = a/2 and OB =a – ut = a – u(a/2u) = a/2 that is at t = a/2u we have, OC = OB.
Therefore, the trains are nearest to each other when they are equally distant from the junction. | mathematics_mcqs_-_class_12.json | |
33393e64 | Which of the following steps are wrong with respect to infiniteness problem? | [
"Remove useless variables",
"Remove unit and epsilon production",
"Create dependency graph for variables",
"If there is a loop in the dependency graph the language is finite else infinite"
] | D | If we are able to detect a loop in the formed dependency graph, then the language in infinite. | automata_theory | |
dea309da | The effect of ___________ holes is to reduce the strength of connected plates. | [
"Lap",
"Weld",
"Rivet",
"Butt"
] | C | The effect of rivet holes is to reduce the strength of the connected plates. The strength of the plate or strength of rivet whichever is less is called the strength of the joint. | strength_of_materials | |
edbfee52 | Which is a refutation complete inference procedure for propositional logic? | [
"Clauses",
"Variables",
"Propositional resolution",
"Proposition"
] | C | Propositional resolution is a refutation complete inference procedure for propositional logic. | artificial_intelligence | |
274d909e | The current rating of a cable depends on ___________ | [
"Length of the cable",
"Diameter of the cable",
"Both length and diameter of the cable",
"Neither length nor diameter of the cable"
] | B | We know that Current rating depends only on the area of cross-section. Since the area of cross section is a function of radius, which in turn is a function of diameter, so the current rating depends only on the Diameter of the cable. | network_theory | |
f7ab179c | What is the worst case time complexity of Tim sort? | [
"O(n)",
"O(n log n)",
"O(n2)",
"O(log n)"
] | A | Best case time complexity of Tim sort occurs when the input array is already sorted. In such a case only one run will be required. | data_structures_&_algorithms_ii | |
1dcb20eb | The area under Gaussian pulse \(\int_{-∞}^∞ e^{{-π}^{{t}^2}} \,dt \) is ___________ | [
"Unity",
"Infinity",
"Pulse",
"Zero"
] | A | Putting \(π^{t^2}\) = x, we get,
\(\int_{-∞}^∞ e^{{-π}^{{t}^2}} \,dt = \int_{-∞}^∞ e^{-x} 2π \sqrt{\frac{x}{π}} \,dx\)
\(= 2\sqrt{π} \int_{-∞}^∞ \sqrt{x} e^{-x} \,dx\)
= 1. | signals_and_systems | |
9a561af6 | What does memory allocation for objects mean? | [
"Actual creation and memory allocation for object members",
"Creation of member functions",
"Creation of data members for a class",
"Actual creation and data declaration for object members"
] | A | The memory allocated for the object members indicates actual creation of the object members. This is known as memory allocation for object. | object_oriented_programming | |
4c91ea70 | Critical velocity of the liquid ___________ | [
"Decrease when radius decreases",
"Increases when radius increases",
"Decreased when density increases",
"Increases when density increases"
] | D | Archimedes’ upward thrust will be absent for a fluid if there were no gravity. | engineering_physics_i | |
5d10dcfd | Which among the following is the correct sequence of events that occur in application of fuzzy logic? | [
"Fuzzify the input, execute the applicable rules, and de-fuzzify the output",
"Execute the applicable rules, fuzzify the input, and de-fuzzify the output",
"Fuzzify the input, de-fuzzify the output, and execute the applicable rules",
"Execute the applicable rules, fuzzify the input, and fuzzify the output"
] | A | The implementation of fuzzy logic generally involves three steps namely fuzzify the input into fuzzy membership functions, execute every rule in the defined rule base to generate the fuzzy output, de-fuzzify the output to get distinct output values. | cognitive_radio | |
17b5e21f | A travelling wave in a stretched string is described by the equation y = Asin(kx-ωt). The maximum particle velocity is ___________ | [
"Aω",
"ω/k",
"dω/dk",
"x/t"
] | A | y=Asin(kx-ωt)
u=dy/dt=-ωAcos(kx-ωt)
umax=ωA. | engineering_physics_i | |
ea6f566d | 5. In the output of this program, the string “/* Linux */” will be added at the ____ of the source file.<div class="hk1_style-wrap4"><div class="hk1_style-wrap3"><div class="hk1_style-wrap2"><div class="hk1_style-wrap"><div class="hk1_style"><div class="c"><ol><li class="li1"><pre class="de1"> <span class="co2">#include<stdio.h></span></pre></li><li class="li1"><pre class="de1"> <span class="co2">#include<stdlib.h></span></pre></li><li class="li1"><pre class="de1"> <span class="co2">#include<fcntl.h></span></pre></li><li class="li1"><pre class="de1"> </pre></li><li class="li1"><pre class="de1"> <span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span></pre></li><li class="li1"><pre class="de1"> <span class="br0">{</span></pre></li><li class="li1"><pre class="de1"> <span class="kw4">int</span> fd<span class="sy0">;</span></pre></li><li class="li1"><pre class="de1"> fd <span class="sy0">=</span> open<span class="br0">(</span><span class="st0">"san.c"</span><span class="sy0">,</span>O_RDWR<span class="sy0">|</span>O_APPEND<span class="br0">)</span><span class="sy0">;</span></pre></li><li class="li1"><pre class="de1"> write<span class="br0">(</span>fd<span class="sy0">,</span><span class="st0">"/* Linux */"</span><span class="sy0">,</span><span class="nu0">11</span><span class="br0">)</span><span class="sy0">;</span></pre></li><li class="li1"><pre class="de1"> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy0">;</span></pre></li><li class="li1"><pre class="de1"> <span class="br0">}</span></pre></li></ol></div></div></div></div></div></div> | [
"end",
"beginning",
"second line",
"third line"
] | A | The write system call writes at the end of the file because the file is opened with O_APPEND flag.
Output:
[[email protected] sanfoundry]# gcc -o san san.c
[[email protected] sanfoundry]# ./san
[[email protected] sanfoundry]# vim san.c
[[email protected] sanfoundry]# | linux | |
209cdf81 | A DFA cannot be represented in the following format | [
"Transition graph",
"Transition Table",
"C code",
"None of the mentioned"
] | D | A DFA can be represented in the following formats: Transition Graph, Transition Table, Transition tree/forest/Any programming Language. | automata_theory | |
a4e58842 | A compound of molecular formula C8H7ClO shows a prominent band in its IR spectrum at 1690 cm-1. 1H NMR spectrum revealed only two major types of protons in the ratio of 5: 2. Which one of the following structures best fits the above data? | [
"<img src=\"https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-mass-spectroscopy-q7a.png\" alt=\"organic-chemistry-questions-answers-mass-spectroscopy-q7a\" width=\"186\" height=\"76\" class=\"alignnone size-full wp-image-224152\" />",
"<img src=\"https://www.sanfoundry.com/... | B | A mass spectrometer generates multiple ions from the sample under investigation, it then separates them according to their specific mass-to-charge ratio (m/z) or we can say on relative mass of atoms, and then records the relative abundance of each ion type. | organic_chemistry | |
88f07128 | A relation is in ____________ if an attribute of a composite key is dependent on an attribute of other composite key. | [
"2NF",
"3NF",
"BCNF",
"1NF"
] | B | A relation is in 3 NF if an attribute of a composite key is dependent on an attribute of other composite key. (If an attribute of a composite key is dependent on an attribute of other composite key then the relation is not in BCNF, hence it has to be decomposed.). | database_management | |
009e6580 | Pipe-lining is a unique feature of _______ | [
"RISC",
"CISC",
"ISA",
"IANA"
] | D | None. | computer_architecture | |
37ae3410 | In mode 2, the baud rate depends only on | [
"SMOD bit",
"SCON bit",
"Oscillator clock frequency",
"SMOD bit and oscillator clock frequency"
] | D | In mode 2, the baud rate depends only on SMOD bit and oscillator clock frequency. | microprocessor | |
535ddce2 | Which of the following type structure contains all the three glycosphingolipids? | [
"B structure",
"A structure",
"O structure",
"AB structure"
] | C | Type O structure has all three glycosphingolipids. | biochemistry | |
392013c2 | Reservoirs involving large sluice gates are __________ | [
"Storage and conservation reservoirs",
"Flood control reservoirs",
"Distribution reservoirs",
"Drought control reservoirs"
] | B | Flood control reservoirs are provided with large sluice ways to discharge the inflow received by the reservoir during a flood up to a volume that could be safely accommodated in the channel downstream. | engineering_geology | |
bd56877a | In thread chasing dial, half nut is closed when any numbered live coincides with reference live for_____ thread. | [
"even",
"odd",
"can’t say anything",
"none of the mentioned"
] | D | All the sentences are true. These all mentioned sentences are the related with the working of the thread cutting which can be carried on a lathe to obtain standard forms and properties of screw threads by using appropriate tools. | machine_tools | |
1b350c89 | Which of the following relations are correct? | [
"IE + IB = IC",
"IC + IB = IE",
"IE + IC = IB",
"IB + IE = IB"
] | A | The collector current I C in a BJT is made up of two components – one due to majority carriers and the other due to minority carriers. The component of IC due to minority carriers i.e ICO is temparature sensitive. | analog_circuits | |
db23a833 | What is the average case time complexity of standard merge sort? | [
"O(n log n)",
"O(n2)",
"O(n2 log n)",
"O(n log n2)"
] | A | The recurrence relation for merge sort is given by T(n) = 2T(n/2) + n. This can be solved using master’s theorem and is found equal to O(n log n). | data_structures_&_algorithms_ii | |
ca5f82fb | For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference for parallel flow is | [
"Does not depend on counter flow",
"Smaller than counter flow",
"Greater than counter flow",
"Equal to counter flow"
] | A | NTU = U (π d l)/C. | heat_transfer | |
0959e63f | A gravitational law is also called ___________ | [
"Universal law",
"Newton’s law",
"Constant law",
"True law"
] | A | Gravitational law is also called universal law because of the fact that the law of gravitation holds good for any pair of bodies in the universe whether microscopically small or astronomically large in size. | engineering_physics_i | |
b7ac47c4 | A filter that passes all frequencies lying outside a certain range, while it attenuates all frequencies between the two designated frequencies is called? | [
"low pass filter",
"high pass filter",
"band elimination filter",
"band pass filter"
] | C | A band elimination filter passes all frequencies lying outside a certain range, while it attenuates all frequencies between the two designated frequencies. It is also referred to as band stop filter. | network_theory | |
68249ce5 | Acetylcholine receptor ion channel is an example of _____________ | [
"Gated ion channel",
"Receptor enzymes",
"Membrane protein",
"Nuclear protein"
] | A | Acetylcholine receptor ion channel is an example of gated ion channel. | biochemistry | |
ec9374df | ___________ metals fracture toughness is unaffected from temperature increase. | [
"SC",
"BCC",
"FCC",
"HCP"
] | A | Marageing steel has a maximum fracture toughness of the four options. It has the fracture toughness of 90 MPa√m. Alumina, Silicon nitride and PSZ have a fracture toughness of 1.76, 5 and 11 MPa√m respectively. | mechanical_behaviour | |
c682e8b7 | Which of the following models of a semiconductor diode is the most widely used for the purpose of calculation? | [
"Approximate Equivalent Model",
"Ideal Diode Model",
"Piecewise Linear Model",
"Hybrid model"
] | A | Approximate Equivalent model not only saves time and efforts but also provides results with a considerable amount of accuracy. | analog_circuits | |
448dd519 | What is the steady state value of F (t), if it is known that F(s) = \(\frac{10}{(s+1)(s^2+1)}\)? | [
"-5",
"5",
"10",
"Cannot be determined"
] | D | The steady state value of this Laplace transform is cannot be determined since; F(s) is having two poles on the imaginary axis (j and –j). Hence the answer is that it cannot be determined. | signals_and_systems | |
a34428c8 | In case of purely inductive circuit, average power = ____ and θ = ______ | [
"0, 90⁰",
"1, 90⁰",
"1, 0⁰",
"0, 0⁰"
] | A | In case of purely inductive circuit, the phase angle between the voltage and current is zero that is θ=90⁰. Hence the average power = 0. | network_theory | |
306d1a94 | Which of the following data structure is not linear data structure? | [
"Arrays",
"Linked lists",
"Arrays & Linked lists",
"None of the mentioned"
] | D | Both array and linked lists are in data structure concepts. | database_management | |
722e6cfa | Total pressure is an addition of static pressure and ______ | [
"Dynamic pressure",
"Stagnation pressure",
"Fluid pressure",
"Instantaneous pressure"
] | A | Total pressure is an addition of static pressure and dynamic pressure. In incompressible flow, the stagnation pressure is equal to the sum of dynamic pressure and static pressure. So here, stagnation pressure is equal to total pressure. | fluid_mechanics | |
c6bb79a4 | Low resistance is measured by ___________ | [
"De-Sauty’s bridge",
"Maxwell’s bridge",
"Kelvin double bridge",
"Wein’s bridge"
] | C | Here, V = 31.5∠38.4°
I = 12.4∠27.5°
Z = \(\frac{31.5∠38.4°}{12.4∠27.5°}\) = 2.54∠10.9°
But Z = R + jX = 2.49 + j0.48
∴ Reactance X= 2.54 Ω. | electrical_measurements | |
2303956e | Which call is correct for public members of a nested class? | [
"Can be called from object of enclosing class",
"Can be called within enclosing class only with direct names",
"Direct names should be used for the nested classes",
"Only with help of nested class object pointer"
] | A | The closest definition is that any public member function of the nested class can be accessed with the help of enclosing class object. The nested class object pointer can be used only within the enclosing class. It’s not mandatory to use the members of nested class only within the enclosing class. | object_oriented_programming | |
634d3110 | What does a viral DNA becomes after being associated with the bacterial chromosome? | [
"gene",
"prophage",
"plasmid",
"plaque"
] | B | In lysogeny the viral DNA of the temperate phage, instead of taking over the functions of the cell’s genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. | microbiology | |
94fdb604 | How many strings of length less than 4 contains the language described by the regular expression (x+y)*y(a+ab)*? | [
"7",
"10",
"12",
"11"
] | D | String of length 0 = 1
string of length 1 = 4
string of length 2 = 3
string of length 3 = 3. | compiler | |
e294631b | Consider the above problem, also calculate the temperature at the inside surfaces of the sphere | [
"138.3 degree Celsius",
"327.8 degree Celsius",
"254.7 degree Celsius",
"984.9 degree Celsius"
] | C | q g 4 π (R 3 – r 3)/3 = h 0 4 π r 2 (t 2 – t a). | heat_transfer | |
68ccc643 | Which of the following keys is used to moving cursor leftwards along a line? | [
"k",
"h",
"l",
"j"
] | B | For moving the cursor towards left, we can use ‘h’ key. | unix | |
b5d129d1 | Dynamic formula does not indicate about _________ | [
"Temporary change in soil structure and Future settlement",
"Allowable load",
"None of the mentioned",
"All of the mentioned"
] | A | A disadvantage of a dynamic formula is that it gives no indication about the reduced bearing future settlement or temporary changes in soil structure. | geotechnical_engineering_ii | |
62940a59 | _________ is an attack which forces an end user to execute unwanted actions on a web application in which he/she is currently authenticated. | [
"Two-factor authentication",
"Cross-site request forgery",
"Cross-site scripting",
"Cross-site scoring scripting"
] | B | Cross-site request forgery, also known as a one-click attack or session riding and abbreviated as CSRF or XSRF. | database_management | |
af2cc57b | Find the discharge through totally drowned orifice of width 2.3 m if the difference of water levels on both side of the orifice be 40 cm. The height of water from to and bottom of the orifice are 2.6 m and 2.75 m respectively. | [
".56 m3/s",
".64 m3/s",
".75 m3/s",
".55 m3/s"
] | A | Q = 2/3 Cd *b*√2g* (H21.5 – H11.5)
Here,
H1 = 5
H2 = 3.3
b = 3.2
Hence, Q = 29.4 m3/s. | fluid_mechanics | |
b7425e68 | 10. What is true about vapor- liquid equilibrium? | [
"Vapor is at its dew point and liquid at its bubble point",
"Vapor at its bubble point and liquid at its dew point",
"Both the liquid and vapor at dew point",
"Both the liquid and vapor at bubble point"
] | A | Whenever there is a vapor-liquid equilibrium, the vapor is at its dew point and the liquid is at its bubble point. | separation_processes | |
1865128b | _____ register Connected to the Processor bus is a single-way transfer capable. | [
"PC",
"IR",
"Temp",
"Z"
] | D | The Z register is a special register which can interact with the processor BUS only. | computer_architecture | |
72523306 | RSS based location estimation algorithm is an example of ____ | [
"traffic based method",
"waveform based method",
"environment sensing based method",
"source based method"
] | C | Environment sensing based method may be used for seamless positioning. It monitors channel parameters and changes the algorithm accordingly. In RSS location based algorithm, location of device and path loss coefficient of channel environment are used to maintain accuracy. | cognitive_radio | |
6bb0eed1 | Which IS code gives details regarding acid-resistant bricks? | [
"IS 4832",
"IS 4860",
"IS 5766",
"IS 5318"
] | A | IS 875 has five parts which address the imposed, dead, wind, snow and special loads except earthquake that act on structures. | basic_civil_engineering | |
544a8bee | __________________ refers to the logical structuring of records. | [
"Physical organisation",
"Logical organisation",
"Structural organisation",
"File organisation"
] | A | The statement is true. Records are a collection of related fields. They are treated as a unit. | computer_fundamentals | |
f2bc5fd6 | Which one of the following is having the lowest value of Schmidt number? | [
"Oxygen",
"Water",
"Benzene",
"Ethyl alcohol"
] | B | Schmidt number of water is 0.60 while that of oxygen, ethyl alcohol and benzene are 0.75, 1.76 and 1.30 respectively. | mass_transfer | |
cc7c750e | What is the advantage of connecting two coils in parallel? | [
"reduce the amount of copper required",
"increase the current per parallel path to double the value",
"increase the voltage capacity",
"all of the mentioned"
] | B | The parallel connection of two coils will increase the current per parallel path to double the value. | electrical_machines | |
e01aea07 | The power required, can be given by ____ | [
"w*Dp",
"w*As",
"w*nc",
"w*m"
] | D | The power required by the machine can be calculate by P = w*m, where m is the feed rate and the w is the energy absorbed. | mechanical_operations | |
d441c2e1 | Software Design consists of _____________ | [
"Software Product Design",
"Software Engineering Design",
"Software Product & Engineering Design",
"None of the mentioned"
] | C | Software design consists of product and engineering design. | software_architecture | |
122dac47 | Which of the following lines of code will result in an error? | [
"s={abs}",
"s={4, ‘abc’, (1,2)}",
"s={2, 2.2, 3, ‘xyz’}",
"s={san}"
] | A | The set data type makes use of a principle known as hashing. This means that each item in the set should be hashable. Hashable in this context means immutable. List is mutable and hence the line of code shown above will result in an error. | python | |
84b21b10 | The DMA controller has _______ registers. | [
"4",
"2",
"3",
"1"
] | C | The Controller uses the registers to store the starting address, word count and the status of the operation. | computer_architecture | |
6d063f9f | Total Magnification is obtained by __________ | [
"Magnifying power of the objective lens",
"Magnifying power of eyepiece",
"Magnifying power of condenser lens",
"Magnifying power of both the objective lens and eyepiece"
] | D | The total magnification is determined by multiplying the magnifying power of the objective by that of the eyepiece. Generally, an eyepiece having a magnification of 10X is used although eyepieces of higher or lower magnifications are available. | microbiology | |
89bb0466 | What is a delegation connector? | [
"A delegation connector ties a component interface to one or more internal classes or components",
"Delegation connectors are solid arrows stereotyped <>",
"A delegation connector may also extend from an internal class to an external interface",
"All of the mentioned"
] | D | All of the mentioned options represents delegation connector and are true. | software_architecture | |
9185ed92 | GDB stands for | [
"GNU debugger",
"General debugging breakpoint",
"General debugger",
"None of the mentioned"
] | A | None. | linux | |
0bbc828f | A person sitting in a chair in a satellite feels weightless because _____ | [
"the earth does not attract the objects in a satellite",
"the normal force by the chair on the person balances the earth’s attraction",
"the normal force is zero",
"the person in the satellite is not accelerated"
] | A | The net acceleration due to gravity is zero at all points inside a uniform spherical shell because of which an object is weightless. This is because the sum of gravitational force vectors from all sides of the object is zero inside the shell. | physics_mcqs_-_class_11.json | |
d3ca6af1 | Which of the following statements is correct? | [
"1k.Cal=2B.Th.U",
"1B.Th.U=252Cal",
"1k.Cal=100Cal",
"1k.Cal=4C.H.U"
] | B | 1B.Th.U=252Cal is the correct one. 1k.Cal=2B.Th.U is wrong because 1k.Cal=3.968B.Th.U=2.2 C.H.U. So 1k.Cal=4C.H.U is also wrong. Kilo means 1000. So, 1k.Cal=1000Cal. | applied_chemistry | |
df044127 | Which of the following is an application of Teflon? | [
"Coatings of frying pans",
"Combs and brush handles",
"Audio cassettes",
"Optical fibres"
] | C | Teflon has very low coefficient of friction. All the other options are correct. | engineering_chemistry_i | |
27d02ba3 | A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of 40 Hz, then the humming ___________ | [
"increases",
"decreases",
"remains same",
"increases to very high"
] | A | It is true as the circuit will still be closed and the transformer will operate will lesser operating point. | electrical_machines | |
f3550fdc | The additional duplicate register used in ARM machines are called as _______ | [
"Copied-registers",
"Banked registers",
"EXtra registers",
"Extential registers"
] | C | This is a system architecture, in which the performance of the system is improved by reducing the size of the instruction set. | computer_architecture | |
71ba9b91 | How much CO2 in kg can be produced with 1 mole of O2? (Consider C4H10 is in excess) | [
"22",
"88",
"132",
"176"
] | A | 1 mole of CH4 is equivalent to 1 moles of CO2. | chemical_process_calculation | |
40dd9f95 | Delimiting and synchronization of data exchange is provided by __________ | [
"Application layer",
"Session layer",
"Transport layer",
"Link layer"
] | B | The session layer provides the mechanism for opening, closing and managing a session between end-user application processes. The session layer 5 is responsible for establishing managing synchronizing and terminating sessions. In TCP/IP protocol stack, the functions of the session layer are handled by the transport layer itself and thus the session layer is missing from the TCP/IP model. | computer_network | |
7226e115 | The line positions if the X-ray powder diffraction are_______________ | [
"Unfixed",
"Variable",
"Parabolic",
"Fixed"
] | D | The line positions in the X-ray powder diffraction are fixed and are characteristics of that substance. The intensities may vary from sample to sample, depending on the method of sample preparation and the instrumental conditions. | solid_state_chemistry | |
1deb8f8f | Which command is used to display the documentation of commands in UNIX? | [
"help",
"search",
"whatis",
"man"
] | D | uname command is used for printing the information about the current system. -a is used for printing all the information including version name, kernel name, kernel release, machine hardware name etc. -s is used for printing only the kernel name while -v is used for printing the kernel version. | unix | |
3a9175b1 | A circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is | [
"395",
"790",
"1580",
"3160"
] | D | Mass of flywheel = weight of flywheel/Acceleration due to gravity = 4500/10kg
Moment of Inertia = mk2
= 1800 kgm2
ω1 = 2π/60 x 125rad/sec
ω2 = 2π/60 x 120rad/sec
Emax = 1/2 I(?)2
= 12087.2 N-m
= 12100 Nm | theory_of_machines | |
ff661dc7 | Beam balance is used for _________________ | [
"Weight comparison",
"Pressure comparison",
"Density comparison",
"None of the mentioned"
] | A | Beam balance system is used for comparing two difference weights. | instrumentation_transducers | |
941bfec6 | A joint sample space for two random variable X and Y has four elements (1,1), (2,2), (3,3) and (4,4). Probabilities of these elements are 0.1, 0.35, 0.05 and 0.5 respectively. What is the probability of the event that X is less than three? | [
"0.45",
"0.50",
"0.55",
"0.60"
] | B | The required answer is given by Fx(3.0) = Fxy(3.0, infinity) = 0.1 + 0.35 + 0.05 = 0.50. | electronic_devices_&_circuits | |
904b790d | Which of the following backup systems are expensive and highly customized to a particular application such as SQL Server? | [
"Continuous Data Protection",
"Open file backup",
"Reverse Delta backup",
"Data archival"
] | B | Some applications such as database systems and messaging systems are mission critical and cannot be shut down before being backed up. | cloud_computing | |
dfefbf09 | Considering a binary solution of components A and B obeys Raoult’s law, which of the following is true? | [
"Total vapor pressure cannot be related to mole fraction of only one component",
"Total vapor pressure of one component varies non-linearly with another component",
"A plot of vapor pressures of both components gives a linear plot",
"Total vapor pressure of solution always decreases with increase in mole frac... | C | Raoult’s law states that the partial pressure of each component in the solution varies directly with its mole fraction in the solution. It is formulated as ptotal = pA + (pB – pA)xB. From this, it is seen that when a graph is plotted, it gives a linear plot passing through origin. Total vapor pressure can be expressed as mole fraction of one component and that it varies linearly with the latter. However, total vapor solution may decrease or increase with increase in mole fraction of a component. | chemistry_mcqs_-_class_12.json | |
a27ac96b | A spring block system is on a horizontal surface. The block is compressed by 10cm. What should be the coefficient of friction between the block and ground such that the block comes to a stop at the mean position? Mass of block = 0.5kg & spring constant = 3N/m. | [
"0.03",
"0.06",
"0.12",
"0.05"
] | A | The springs with spring constant 5 and 3 are parallel, so their effective spring constant is 5+3 = 8. Now, spring with spring constant 2 is in series with effective constant 8, so net spring constant = (1/8 + 1/2)-1 = 8/5. | physics_mcqs_-_class_11.json | |
2880d0e6 | The length of life of an instrument produced by a machine has a normal distribution with a mean of 9.4 months and a standard deviation of 3.2 months. What is the probability that an instrument produced by this machine will last between 6 and 11.6 months? | [
"0.642",
"0.4098",
"0.16",
"0.326"
] | D | We have to find P(6 < x < 11.6). Now, for x = 6, z becomes -1.062 and for z = 11.6, z = 0.687. So, P(6 < x < 11.6) = P(-1.062 < z < 0.687) = 0.326. | discrete_mathematics | |
3ffa5f06 | Can impulse response be measured? | [
"Impulse cannot be generated",
"Impulse can be generated",
"Can be measured",
"Cannot be measured"
] | A | Ideal low pass filter has sharp transitions which cannot be physically realized. Hence non – causal. | signals_and_systems | |
bb12c62e | The product of inertia at the principal axes is _____________ | [
"Minimum",
"Unit",
"Zero",
"Maximum"
] | C | The moment of inertia about x-axis and about y-axis, on the axis they are zero. So the product of inertia will be zero in the principal axis. | strength_of_materials | |
96f02245 | What is the percentage of N2 in the product? | [
"8",
"18",
"34",
"46"
] | B | H2 has higher extent of reaction. | chemical_process_calculation | |
738bcf88 | Smallest microtubular motor proteins are __________________ | [
"dyeneins",
"niacin",
"thiamine",
"kinesin"
] | C | Motor proteins are divided into three superfamilies: dyneins, myosins and kinesins. Dyneins and kinesins move along microtubules, and myosins move along microfilaments. | cell_biology | |
aa19fb59 | 14. The need of assuming non-linear element as linear: | [
"Simplicity of analysis and accuracy of results",
"Ease of calculations",
"Less time consuming",
"Mathematical tool available"
] | D | All the mathematical tools are available as per ideal cases so it is necessary to make assumptions for non-ideal to be nearly ideal and hence do the necessary calculations as needed. | control_systems | |
358104d2 | Torque angle λ is the angle between ____________ | [
"stator MMF Fs and resultant MMF FR",
"stator MMF Fs and rotor MMF Fr",
"rotor MMF Fr and resultant MMF FR",
"any of the mentioned"
] | B | The electrical space angle λ between stator and rotor MMFs is called the torque angle. | electrical_machines | |
bcb3b4b5 | Which of the following is used with :set to customize vi to ignore case in pattern searches? | [
"nomatch",
"ignorecase",
"nocase",
"nomagic"
] | A | vi environment is determined by variable settings. These variables are controlled by :set command. | unix | |
9862eb4d | Which of the following easily adapt itself to store electrical energy? | [
"Passive dielectric",
"Superconductor",
"Active dielectric",
"Polar molecules"
] | C | When a dielectric is subjected to an external electric field, if the dielectric actively accepts electricity, then they are termed as active dielectrics. Thus active dielectrics are the dielectrics which can easily adapt itself to store the electrical energy in it. | engineering_physics_ii | |
7ec9a989 | Torque-slip characteristic of an induction motor is linear in the smaller slip values, because ___________ | [
"effective rotor resistance is very large compared to reactance",
"rotor resistance is equal to stator resistance",
"rotor resistance is equal to rotor reactance",
"rotor reactance almost equal to stator reactance"
] | A | Air gap flux increases as the load increase. | electrical_machines | |
d67a008d | Which of the following statement is the main disadvantage of emitter feedback bias? | [
"Reduces the gain",
"Positive feedback",
"Design is difficult",
"High output impedance"
] | C | Since the temperature changes IE value, these results in the increase of feedback through R_E, which in turn reduces Ib, resulting in constant gain, even though temperature effects beta and other transistor parameters, due to the feedback these effects are neutralized. | electronic_devices_&_circuits | |
9b8fe0a5 | The response of a second order system is? | [
"pulse",
"saw tooth",
"square",
"sinusoid"
] | D | The response of a second order system is sinusoid. Any periodic waveform can be written in terms of sinusoidal function according to Fourier transform. | network_theory | |
6c9c5c77 | The words are separated by a space of how many durations? | [
"5",
"6",
"7",
"4"
] | C | The words are separated by a space of 7 dot durations. Since the dot duration is of 1 Unit. So, the words are separated by a space of 7 Unit. | data_structures_&_algorithms_ii |
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