question stringlengths 4 4.67k | subject stringclasses 57 values | category listlengths 4 4 | answer stringclasses 4 values |
|---|---|---|---|
Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is | electrical_engineering | [
"500 MVA",
"400 MVA",
"125 MVA",
"100 MVA"
] | 0 |
According to the Bohr model, an electron gains or losses energy only by | electrical_engineering | [
"moving faster or slower in an allowed orbit.",
"jumping from one allowed orbit to another.",
"being completely removed from an atom.",
"jumping from one atom to another atom."
] | 1 |
A three-state buffer has the following output states | electrical_engineering | [
"1, 0, float",
"High, Low, Float",
"Both A and B",
"Set, Reset, Halt"
] | 2 |
By using which of the following elements, mechanical translational systems are obtained? | electrical_engineering | [
"mass element",
"spring element",
"dash-pot",
"all of the above"
] | 3 |
Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be | electrical_engineering | [
"160 µF",
"10 µF",
"40 µF",
"5 µF"
] | 0 |
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be | electrical_engineering | [
"R Ω",
"2R Ω",
"4R Ω",
"8R Ω"
] | 2 |
A single phase full bridge inverter can operated in load commutation mode in case load consist of | electrical_engineering | [
"RL.",
"RLC underdamped.",
"RLC overdamped.",
"RLC critically damped."
] | 1 |
A microprocessor is ALU | electrical_engineering | [
"and control unit on a single chip.",
"and memory on a single chip.",
"register unit and I/O device on a single chip.",
"register unit and control unit on a single chip."
] | 3 |
To obtain a high value of capacitance, the permittivity of dielectric medium should be | electrical_engineering | [
"low",
"zero",
"high",
"unity"
] | 2 |
Deflection method direct measurements are most widely used as these are | electrical_engineering | [
"least time consuming.",
"most simple.",
"most simple and least time consuming.",
"most accurate."
] | 2 |
Purely mechanical instrument cannot be used for dynamic measurements because they have | electrical_engineering | [
"high inertia.",
"higher response time.",
"large time constant.",
"all of the above."
] | 3 |
Advantages of higher transmission voltage is/are | electrical_engineering | [
"Power transfer capability of the transmission line is increased",
"Transmission line losses are reduced",
"Area of cross section and volume of the conductor is reduced",
"all of the above"
] | 3 |
Under over voltage condition impedance offered by the voltage clamping device is | electrical_engineering | [
"high.",
"low.",
"moderate.",
"infinity."
] | 1 |
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at | electrical_engineering | [
"lower surface of the conductor.",
"upper surface of the conductor.",
"the ground surface.",
"midway between the conductor and ground."
] | 0 |
In a dc machine 6 pole wave winding is used. The number of parallel paths are? | electrical_engineering | [
"6",
"4",
"2",
"1"
] | 2 |
Which of the following is a digital device | electrical_engineering | [
"Regulator of a fan",
"Microphone",
"Resistance of a material",
"Light switch"
] | 3 |
Instantaneous power in inductor is proportional to the | electrical_engineering | [
"product of the instantaneous current and rate of change of current.",
"square of instantaneous current.",
"square of the rate of change of current.",
"temperature of the inductor."
] | 0 |
Which of the following is a variable displacement transducer? | electrical_engineering | [
"tachometer",
"potentiometer",
"synchros",
"none of the above"
] | 1 |
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be | electrical_engineering | [
"5 µF",
"25 µF",
"10 µF",
"1 µF"
] | 3 |
Susceptibility is negative for | electrical_engineering | [
"non magnetic substances.",
"diamagnetic substances.",
"ferromagnetic substances.",
"none of above."
] | 1 |
One of the following is the primary function of an oscillator | electrical_engineering | [
"produces sinusoidal oscillations",
"generates non sinusoidal waveforms",
"generates sustained oscillations at a constant amplitude and specific frequency",
"none of the above"
] | 2 |
The metal surfaces for electrical resistance welding must be | electrical_engineering | [
"rough.",
"clean.",
"moistened",
"coloured"
] | 1 |
The latching current of SCR is 20 mA. Its holding current will be | electrical_engineering | [
"23 mA.",
"40 mA.",
"10 mA.",
"60 mA."
] | 2 |
In force-current analogy, electrical analogous quantity for displacement (x) is | electrical_engineering | [
"voltage.",
"inductance.",
"capacitance.",
"flux."
] | 3 |
Feedback circuit in an oscillator can be accomplished by | electrical_engineering | [
"Resistive coupling between input and output",
"Capacitive coupling between input and output",
"Inductive coupling between input and output",
"Any one or combinations of the above methods"
] | 3 |
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is | electrical_engineering | [
"LC circuit.",
"RC circuit.",
"RLC circuit.",
"RL Circuit."
] | 3 |
What is the value of dielectric constant of air? | electrical_engineering | [
"Less than 1",
"0.",
"1.",
"none of these."
] | 2 |
Temperature variation is a/an | electrical_engineering | [
"Digital quantity",
"Analog quantity",
"Either Digital or Analog quantity",
"None"
] | 1 |
The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is | electrical_engineering | [
"30",
"140.",
"150.",
"200."
] | 2 |
For a dc machine shunt resistance and armature resistance values are | electrical_engineering | [
"high and high",
"high and low",
"low and low",
"low and high"
] | 1 |
The change of cross sectional area of conductor in magnetic field will affect | electrical_engineering | [
"reluctance of conductor.",
"resistance of conductor.",
"(A) and (B) both in the same way.",
"none of above."
] | 2 |
Which of the following is used in SCR to protect from high dV / dt? | electrical_engineering | [
"Snubber circuit.",
"Fuse.",
"Equalizing circuit.",
"Circuit breaker."
] | 0 |
What are the sets of commands in a program which are not translated into machine instructions during assembly process, called? | electrical_engineering | [
"Mnemonics",
"Directives",
"Identifiers",
"Operands"
] | 1 |
Speed of data transmission in 4-G network of telecom is | electrical_engineering | [
"386 kbps - 2 mbps.",
"2 mbps.",
"2 mbps – 1 gbps.",
"100 mbps - 1 gbps."
] | 3 |
Which of the followings is/are active element? | electrical_engineering | [
"Voltage source",
"Current source",
"Both",
"None of these."
] | 2 |
Electrical analogous quantity for spring element (K) in force-voltage analogy is | electrical_engineering | [
"L",
"R",
"1/C",
"C"
] | 2 |
A quartz crystal oscillator consists of | electrical_engineering | [
"only series resonant frequency.",
"only parallel resonant frequency.",
"both series and parallel frequencies.",
"neither series nor parallel frequency."
] | 2 |
Which of the following oscillators are used for low frequency (LF) applications | electrical_engineering | [
"LC oscillators",
"RC oscillators",
"Both LC and RC Oscillators",
"None"
] | 1 |
The solid angle subtended by an area of 2400 cm^2 on the surface of a sphere of diameter 1.2 m is | electrical_engineering | [
"3 / 2.",
"1 / 3.",
"2 / 3.",
"2 / 5."
] | 2 |
Relative error is same as | electrical_engineering | [
"ratio of absolute error and true value.",
"absolute error.",
"true error.",
"none of the above."
] | 0 |
If holding current of a thyristor is 2 mA then latching current should be | electrical_engineering | [
"0.01 A.",
"0.002 A.",
"0.009 A.",
"0.004 A."
] | 3 |
In an intel 8085A, which is the first machine cycle of an instruction? | electrical_engineering | [
"An op-code fetch cycle",
"A memory read cycle",
"A memory write cycle",
"An I/O read cycle"
] | 0 |
Which of the following are the disadvantages of a closed loop control system? | electrical_engineering | [
"Reduces the overall gain.",
"Complex and costly.",
"Oscillatory response.",
"All of the above."
] | 3 |
Poles and zeros are arranged alternatively on negative real axis, then type of network is/are | electrical_engineering | [
"LC network.",
"RC network.",
"RL network.",
"Both 2 and 3."
] | 3 |
The magnetisation and applied field in ferromagnetic materials are related | electrical_engineering | [
"sinusoidally.",
"non linearly.",
"linearly.",
"parabolically."
] | 1 |
Thin laminations are used in a machine in order to reduce | electrical_engineering | [
"Eddy current losses",
"Hysteresis losses",
"Both A and B",
"Copper losses"
] | 0 |
A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is | electrical_engineering | [
"40π coulombs.",
"80π coulombs.",
"10π coulombs.",
"none of these."
] | 1 |
In binary number system the first digit (bit) from right to left is called as | electrical_engineering | [
"LSB, Least Significant Bit",
"MSB, Most Significant Bit",
"First Bit",
"Last Bit"
] | 0 |
In two wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is | electrical_engineering | [
"0.",
"0.5.",
"1.",
"none of above."
] | 1 |
A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage | electrical_engineering | [
"3.33 %.",
"2.66 %.",
"2 %.",
"1 %."
] | 1 |
Which of the following methods is/are used for reactive or voltage compensation | electrical_engineering | [
"shunt capacitor",
"series capacitor",
"generation excitation control",
"all of the above"
] | 3 |
The ROM programmed during manufacturing process itself is called | electrical_engineering | [
"MROM",
"PROM",
"EPROM",
"EEPROM"
] | 0 |
In 8085 name/names of the 16 bit registers is/are | electrical_engineering | [
"stack pointer.",
"program counter.",
"both A and B.",
"none of these."
] | 2 |
Stability of a transmission line can be increased by | electrical_engineering | [
"shunt capacitor",
"series capacitor",
"shunt reactor",
"both A and B"
] | 3 |
Snubber circuit is used with SCR | electrical_engineering | [
"in series.",
"in parallel.",
"either series or parallel.",
"anti parallel."
] | 1 |
The number of rings in the Bohr model of any element is determined by what? | electrical_engineering | [
"Column number on periodic table.",
"Atomic mass.",
"Row number on periodic table.",
"Atomic number."
] | 2 |
Silicon and Germanium are ________ elements. | electrical_engineering | [
"trivalant",
"pentavalant",
"hexavalant",
"tetravalant"
] | 3 |
The number of output pins in 8085 microprocessors are | electrical_engineering | [
"27.",
"40.",
"21.",
"19."
] | 0 |
If P is the power of a star connected system then what will be power of an equivalent delta connected system? | electrical_engineering | [
"P",
"3P",
"P/3",
"None of the above"
] | 0 |
Which oscillators are easy to fabricate in a monolithic IC? | electrical_engineering | [
"Crystal oscillator.",
"Hartley oscillator.",
"Wien bridge oscillator.",
"Relaxation oscillator."
] | 3 |
If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is | electrical_engineering | [
"DC only",
"AC only",
"Either AC or DC",
"An Impulse"
] | 2 |
The feedback factor of a Wien bridge oscillator using Op-Amp is | electrical_engineering | [
"1/3",
"1/4",
"1/2",
"1"
] | 2 |
The length of bus cycle in 8086/8088 is four clock cycles, T1, T2, T3, T4 and an indeterminate number of wait state clock cycles denoted by Tw. The wait states are always inserted between | electrical_engineering | [
"T1 & T2",
"T2 & T3",
"T3 & T4",
"T4 & T1"
] | 2 |
Which of the following is not a sinusoidal oscillator? | electrical_engineering | [
"LC oscillator",
"RC phase shift oscillator",
"Relaxation oscillator",
"Crystal oscillator"
] | 2 |
A wire carrying current is bent in the form of a circular loop. Then the magnetic field around each portion of the wire will be | electrical_engineering | [
"parallel to the plane of the wire.",
"perpendicular to the circumference of the wire.",
"parallel to half portion and perpendicular for the other half.",
"none of above."
] | 0 |
What is the value of p in 24 = 2p? | elementary_mathematics | [
"p = 4",
"p = 8",
"p = 12",
"p = 24"
] | 2 |
Ms. Perez drove a total of 40 miles in 5 days. She drove the same number of miles each day. How many miles did Ms. Perez drive each day? | elementary_mathematics | [
"5",
"7",
"8",
"9"
] | 2 |
Find the quotient of −40 ÷ (−8). | elementary_mathematics | [
"1 over 5",
"−5",
"−1 over 5",
"5"
] | 3 |
A soccer team has $90.00 to buy soccer balls. If one soccer ball costs $15.60, what is the greatest number of soccer balls the team can buy? | elementary_mathematics | [
"4",
"5",
"6",
"7"
] | 1 |
You and three friends go to a concert. The total cost for four tickets is $112. Write and solve an equation to find the cost of one ticket t. | elementary_mathematics | [
"4t = 112; $448",
"4t = 112; $28",
"t over 4 = 112; $448",
"t over 4 = 112; $28"
] | 1 |
Use the expression below to answer the question. 3 × [(2 × 6 – 5) + (8 ÷ 4)] – 1 What is the value of the expression? | elementary_mathematics | [
"9",
"11",
"26",
"32"
] | 2 |
Write 1 and 1 over 11 as a whole or mixed number in simplest form. | elementary_mathematics | [
"1.1 over 11",
"11 over 11",
"12 over 11",
"11 over 12"
] | 2 |
Find the quotient of 2.16 ÷ 0.06. | elementary_mathematics | [
"3.6",
"36",
"0.01272",
"12.72"
] | 1 |
Find the difference of 142.76 – 16.5. | elementary_mathematics | [
"159.26",
"2.224",
"14,111",
"126.26"
] | 3 |
Find the quotient of 5.04/0.7 | elementary_mathematics | [
"0.72",
"0.702",
"10.0571",
"7.2"
] | 3 |
Jimmy and Kima are going on a trip. They will drive for three days. The first day they will drive 182 miles. The second day they will drive 439 miles. The third day they will drive 217 miles. Which expression is the closest estimate of how many miles Jimmy and Kima will drive on their trip? | elementary_mathematics | [
"150 + 400 + 200",
"200 + 400 + 200",
"200 + 450 + 200",
"200 + 500 + 200"
] | 2 |
What is the remainder of 21 divided by 7? | elementary_mathematics | [
"21",
"7",
"1",
"None of these"
] | 3 |
Maddie will ride her bike a total of 56 miles over 7 days. She will ride the same number of miles each day. What is the total number of miles Maddie will ride each day? | elementary_mathematics | [
"8",
"9",
"49",
"63"
] | 0 |
Find the number that makes the statement 48 over 88 = ? over 11 true. | elementary_mathematics | [
"6",
"11",
"8",
"5"
] | 0 |
Which is the best buy? | elementary_mathematics | [
"10 bars of soap for $23.20",
"16 bars of soap for $36.48",
"13 bars of soap for $29.51",
"12 bars of soap for $27.60"
] | 2 |
Trish’s resting heart rate is 50 beats per minute. For every minute she exercises, her heart rate increases 5 beats per minute. How long will it take her to reach a heart rate of 120 beats per minute? | elementary_mathematics | [
"5 minutes",
"14 minutes",
"34 minutes",
"70 minutes"
] | 1 |
Find the median in the set of data 23, 13, 18, 29, 32, 25. | elementary_mathematics | [
"18",
"24",
"25",
"29"
] | 1 |
Jack picks 60 apples from an apple tree. He uses 12 of them to make applesauce. He places the remaining apples equally into 6 gift baskets. Which equation can be used to determine the numberof apples, a, that Jack places into each gift basket? | elementary_mathematics | [
"(60/6)—12=a",
"(60—12)/6=a",
"(60-6)-12=a",
"(60+12)/6=a"
] | 1 |
A certain map uses a scale of 1 inch equals 25 miles. How many miles are represented by 5 inches on this map? | elementary_mathematics | [
"5",
"25",
"50",
"125"
] | 3 |
Simplify (2 + 5)^2 − 42. | elementary_mathematics | [
"7",
"16",
"30",
"33"
] | 0 |
Find the value of 4 ÷ 2 • 2 + 8 − 4. | elementary_mathematics | [
"−12",
"12",
"8",
"16"
] | 2 |
A coach rounded the number of runners at a track meet to the nearest 10. The rounded number of runners is 400. Which number could be the actual number of runners at the track meet? | elementary_mathematics | [
"382",
"397",
"406",
"447"
] | 1 |
−4 + ( −3 )= | elementary_mathematics | [
"−7",
"−1",
"1",
"7"
] | 0 |
Mark has a stamp collection. He has 22 stamps from Japan, 34 from Canada, and 17 from Mexico. How many stamps does he have in all? | elementary_mathematics | [
"53",
"63",
"73",
"83"
] | 2 |
Identify a solution for the equation x + 2.7 = 8.4 from the given numbers. | elementary_mathematics | [
"11.1",
"5.7",
"3.7",
"22.68"
] | 1 |
Find the number that makes the statement true: 0.32 g = _ cg. | elementary_mathematics | [
"32",
"3.2",
"3,200",
"320"
] | 0 |
Find the product of 5.7(8) mentally using the Distributive Property. | elementary_mathematics | [
"46.4",
"456",
"4.56",
"45.6"
] | 3 |
What is the quotient for the expression 2,314 / 4? | elementary_mathematics | [
"508",
"508 r2",
"578",
"578 r2"
] | 3 |
Rosa has a goal of running a total of 100 miles this month. Each day that she ran, she ran 5 miles. Which expression could Rosa use to determine how many miles she has left to run after running for d days? | elementary_mathematics | [
"100 — 5d",
"5d+ 100",
"100 / 5d",
"5d"
] | 0 |
Identify the algebraic expression that matches the word phrase: 4 times as many cans as Tom collected. | elementary_mathematics | [
"4t",
"t over 4",
"t − 4",
"t + 4"
] | 0 |
Andrew wrote the number 186,425 on the board. In which number is the value of the digit 6 exactly 10 times the value of the digit 6 in the number Andrew wrote? | elementary_mathematics | [
"681,452",
"462,017",
"246,412",
"125,655"
] | 1 |
What is 123 / 8? | elementary_mathematics | [
"15 remainder 7",
"15 remainder 3",
"16 remainder 5",
"16 remainder 1"
] | 1 |
Write 8 and 2 over 4 as an improper fraction in simplest form. | elementary_mathematics | [
"17 over 2",
"34 over 4",
"17 over 4",
"19 over 2"
] | 0 |
What expression can be used to show 270,240 written in expanded form? | elementary_mathematics | [
"200,000 + 7,000 + 200 + 4",
"200,000 + 7,000 + 200 + 40",
"200,000 + 70,000 + 200 + 40",
"200,000 + 70,000 + 2,000 + 40"
] | 2 |
A worker on an assembly line takes 7 hours to produce 22 parts. At that rate how many parts can she produce in 35 hours? | elementary_mathematics | [
"220 parts",
"770 parts",
"4 parts",
"110 parts"
] | 3 |
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