choices
sequence | answer
class label 4
classes | question
stringlengths 21
197
|
|---|---|---|
[
"produces sinusoidal oscillations",
"generates non sinusoidal waveforms",
"generates sustained oscillations at a constant amplitude and specific frequency",
"none of the above"
] | 2C
| None of the following is the primary function of an oscillator |
[
"rough.",
"clean.",
"moistened",
"coloured"
] | 1B
| The metal surfaces for electrical resistance welding must be |
[
"23 mA.",
"40 mA.",
"10 mA.",
"60 mA."
] | 2C
| The latching current of SCR is 30 mA. Its holding current will be |
[
"voltage.",
"inductance.",
"capacitance.",
"flux."
] | 3D
| In force-current analogy, electrical analogous quantity for displacement (x) is |
[
"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"
] | 3D
| Feedback circuit in an oscillator can't be accomplished by |
[
"LC circuit.",
"RC circuit.",
"RLC circuit.",
"RL Circuit."
] | 3D
| Lowest critical frequency is due to zero and it may not be present at the origin or nearer to the origin, then the type of network is |
[
"Less than 1",
"0.",
"1.",
"none of these."
] | 2C
| What is the value of dielectric constant of water? |
[
"Digital quantity",
"Analog quantity",
"Either Digital or Analog quantity",
"None"
] | 1B
| Temperature variation is not a/an |
[
"30",
"140.",
"150.",
"200."
] | 2C
| The illumination at a point 5 meters below a lamp is 0 lux. The candle power of the lamp is |
[
"high and high",
"high and low",
"low and low",
"low and high"
] | 1B
| For a dc machine shunt resistance and armature resistance values are |
[
"reluctance of conductor.",
"resistance of conductor.",
"(A) and (B) both in the same way.",
"none of above."
] | 2C
| The change of cross sectional area of conductor in magnetic field will not affect |
[
"Snubber circuit.",
"Fuse.",
"Equalizing circuit.",
"Circuit breaker."
] | 0A
| Which of the following is used in SCR to protect from low dV / dt? |
[
"Mnemonics",
"Directives",
"Identifiers",
"Operands"
] | 1B
| What are the sets of commands in a program which are translated into machine instructions during assembly process, called? |
[
"386 kbps - 2 mbps.",
"2 mbps.",
"2 mbps – 1 gbps.",
"100 mbps - 1 gbps."
] | 3D
| Speed of data transmission in 2-G network of telecom is |
[
"Voltage source",
"Current source",
"Both",
"None of these."
] | 2C
| Which of the followings is/are inert element? |
[
"L",
"R",
"1/C",
"C"
] | 2C
| Electrical analogous quantity for force (F) in force-voltage analogy is |
[
"only series resonant frequency.",
"only parallel resonant frequency.",
"both series and parallel frequencies.",
"neither series nor parallel frequency."
] | 2C
| A quartz crystal is used in |
[
"LC oscillators",
"RC oscillators",
"Both LC and RC Oscillators",
"None"
] | 1B
| Which of the following is not used for low frequency (LF) applications |
[
"3 / 2.",
"1 / 3.",
"2 / 3.",
"2 / 5."
] | 2C
| The solid angle not subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is |
[
"ratio of absolute error and true value.",
"absolute error.",
"true error.",
"none of the above."
] | 0A
| Relative error is same as correctness |
[
"0.01 A.",
"0.002 A.",
"0.009 A.",
"0.004 A."
] | 3D
| If holding current of a thyristor is 1 mA then latching current should be |
[
"An op-code fetch cycle",
"A memory read cycle",
"A memory write cycle",
"An I/O read cycle"
] | 0A
| In an intel 8080, which is the first machine cycle of an instruction? |
[
"Reduces the overall gain.",
"Complex and costly.",
"Oscillatory response.",
"All of the above."
] | 3D
| Which of the following are the advantages of a closed loop control system? |
[
"LC network.",
"RC network.",
"RL network.",
"Both 2 and 3."
] | 3D
| Poles and zeros are arranged alternatively on positive real axis, then type of network is/are |
[
"sinusoidally.",
"non linearly.",
"linearly.",
"parabolically."
] | 1B
| The magnetisation and applied field in nonferromagnetic materials are unrelated |
[
"Eddy current losses",
"Hysteresis losses",
"Both A and B",
"Copper losses"
] | 0A
| Thin laminations are used in a machine in order to increase |
[
"40π coulombs.",
"80π coulombs.",
"10π coulombs.",
"none of these."
] | 1B
| A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is not enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is |
[
"LSB, Least Significant Bit",
"MSB, Most Significant Bit",
"First Bit",
"Last Bit"
] | 0A
| In binary number system the last digit (bit) from right to left is called as |
[
"0.",
"0.5.",
"1.",
"none of above."
] | 1B
| In one wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is |
[
"3.33 %.",
"2.66 %.",
"2 %.",
"1 %."
] | 1B
| A 0 - 100 V voltmeter has a guaranteed accuracy of 5 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percent |
[
"shunt capacitor",
"series capacitor",
"generation excitation control",
"all of the above"
] | 3D
| Which of the following methods is/are used for voltage compensation |
[
"MROM",
"PROM",
"EPROM",
"EEPROM"
] | 0A
| The ROM programmed after manufacturing process is called |
[
"stack pointer.",
"program counter.",
"both A and B.",
"none of these."
] | 2C
| In 8085 name/names of the 8 bit registers is/are |
[
"shunt capacitor",
"series capacitor",
"shunt reactor",
"both A and B"
] | 3D
| Stability of a transmission line cannot be increased by |
[
"in series.",
"in parallel.",
"either series or parallel.",
"anti parallel."
] | 1B
| Snubber circuit isn't used with SCR |
[
"Column number on periodic table.",
"Atomic mass.",
"Row number on periodic table.",
"Atomic number."
] | 2C
| The number of rings in the Bohr model of any element is determined by what is not? |
[
"trivalant",
"pentavalant",
"hexavalant",
"tetravalant"
] | 3D
| Silicon and germanium are chemical elements |
[
"27.",
"40.",
"21.",
"19."
] | 0A
| The number of input pins in 8085 microprocessors are |
[
"P",
"3P",
"P/3",
"None of the above"
] | 0A
| If P is the power of a delta connected system then what will be power of an equivalent star connected system? |
[
"Crystal oscillator.",
"Hartley oscillator.",
"Wien bridge oscillator.",
"Relaxation oscillator."
] | 3D
| Which oscillators are difficult to fabricate in a monolithic IC? |
[
"DC only",
"AC only",
"Either AC or DC",
"An Impulse"
] | 2C
| If all the elements in a particular network are nonlinear, then the superposition theorem would hold, when the excitation is |
[
"1/3",
"1/4",
"1/2",
"1"
] | 2C
| The feedback factor of a bridge oscillator using Op-Amp is |
[
"T1 & T2",
"T2 & T3",
"T3 & T4",
"T4 & T1"
] | 2C
| 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 |
[
"LC oscillator",
"RC phase shift oscillator",
"Relaxation oscillator",
"Crystal oscillator"
] | 2C
| A sinusoidal is an example of a |
[
"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."
] | 0A
| A wire carrying current is bent in the form of a straight line. Then the magnetic field around each portion of the wire will be |