Q. No. 1. Various adjustments in an energy meter include
(a) light load or friction
(b) lag and creep
(c) overload and voltage compensation
(d) temperature compensation
(e) all of the above
Answer: (e) all of the above
Q. No. 2. The line trap unit employed in carrier current relaying:
(A) offers high impedance to 50 Hz power frequency signal
(B) offers high impedance to carrier frequency signal
(C) offers low impedance to carrier frequency signal
(D) Both (A) & (C)
Answer: (B) offers high impedance to carrier frequency signal
Q. No. 3.Most sensitive galvanometer is
(a) elastic galvanometer
(b) spot ballistic galvanometer
(c) Duddlb galvanometer
(d) vibration galvanometer
Answer: (b) spot ballistic galvanometer
Q. No. 4.The output of a feedback control system must be a function of
(a) reference and output
(b) input and feedback signal
(e) reference and input
(d) output and feedback signal
Answer: (a) reference and output
Q. No. 5. No load current in a transformer:
(A) lags the applied voltage by 90°
(B) leads the applied voltage by somewhat less than 90°
(C) leads the applied voltage by 90°
(D) lags the applied voltage by somewhat less than 90°
Answer: (D) lags the applied voltage by somewhat less than 90°
Q. No. 6. E.m.f. of a Weston cell is accurately measured by
(a) isothermal voltmeter
(b) hot wire voltmeter
(c) electrostatic voltmeter
(d) electrodynamic voltmeter
Answer: (c) electrostatic voltmeter
Q. No. 7. technique is not applicable to nonlinear system ?
(a) Phase-plane representation
(b) Quasi linearization
(c) Functional analysis
Answer: (d) Nyquist Criterion
Q. No. 8. A 3 stack stepper motor with 12 numbers of rotor teeth has a step angle of
____________.
(A) 12°
(B) 10°
(C) 24°
(D) 8°
Answer: (B) 10°
Q. No. 9.Commonly used standard capacitor is
(a) spherical type
(b) electrostatic type
(c) concentric cylindrical type
(d) multilayer parallel plate type
Answer: (c) concentric cylindrical type
Q. No. 10. The relative speed between the magnetic fields of stator and rotor under steady state
operation is zero for a
(A) dc machine.
(B) 3 phase induction machine.
(C) synchronous machine.
(D) single phase induction machine.
Answer: all options are correct
(a) light load or friction
(b) lag and creep
(c) overload and voltage compensation
(d) temperature compensation
(e) all of the above
Answer: (e) all of the above
Q. No. 2. The line trap unit employed in carrier current relaying:
(A) offers high impedance to 50 Hz power frequency signal
(B) offers high impedance to carrier frequency signal
(C) offers low impedance to carrier frequency signal
(D) Both (A) & (C)
Answer: (B) offers high impedance to carrier frequency signal
(a) elastic galvanometer
(b) spot ballistic galvanometer
(c) Duddlb galvanometer
(d) vibration galvanometer
Answer: (b) spot ballistic galvanometer
Q. No. 4.The output of a feedback control system must be a function of
(a) reference and output
(b) input and feedback signal
(e) reference and input
(d) output and feedback signal
Answer: (a) reference and output
Q. No. 5. No load current in a transformer:
(A) lags the applied voltage by 90°
(B) leads the applied voltage by somewhat less than 90°
(C) leads the applied voltage by 90°
(D) lags the applied voltage by somewhat less than 90°
Answer: (D) lags the applied voltage by somewhat less than 90°
(a) isothermal voltmeter
(b) hot wire voltmeter
(c) electrostatic voltmeter
(d) electrodynamic voltmeter
Answer: (c) electrostatic voltmeter
Q. No. 7. technique is not applicable to nonlinear system ?
(a) Phase-plane representation
(b) Quasi linearization
(c) Functional analysis
Answer: (d) Nyquist Criterion
Q. No. 8. A 3 stack stepper motor with 12 numbers of rotor teeth has a step angle of
____________.
(A) 12°
(B) 10°
(C) 24°
(D) 8°
Answer: (B) 10°
Q. No. 9.Commonly used standard capacitor is
(a) spherical type
(b) electrostatic type
(c) concentric cylindrical type
(d) multilayer parallel plate type
Answer: (c) concentric cylindrical type
Q. No. 10. The relative speed between the magnetic fields of stator and rotor under steady state
operation is zero for a
(A) dc machine.
(B) 3 phase induction machine.
(C) synchronous machine.
(D) single phase induction machine.
Answer: all options are correct
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