Control Systems MCQ Questions & Answers

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Each section contains 100 MCQs on Control Systems .

A system is highly oscillatory if

A) Gain margin is high B) Gain margin is close to 1 C) Gain margin is close to 1 or phase margin is zero D) Gain margin is high and phase margin is 180°

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In a two phasor servomotor, the direction of rotation of the rotating field depends on

A) Magnitudes of voltages applied to the two stator windings B) Phase relation of voltages applied to the two stator windings C) Both magnitude and phase relationship of voltages applied to the two stator windings D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following is open loop system?

A) Wind screen wiper B) Aqualing C) Respiratory system of animal D) System for controlling antirocket missiles

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The poles with greater displacement from the real axis correspond to

A) Higher frequencies of oscillations B) Stable response C) Lower frequencies of oscillations D) Unbounded output

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The sensor generally used in incremental optical encoder is

A) LED B) LCD C) Photodiode D) Either (a) or (b)

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In force current analogue, mechanical mobility is analogous to

A) Impedance Z B) Admittance Y C) Reactance X D) Conductance G

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Nichols chart consists of

A) Constant magnitude loci B) Constant phase angle loci C) Magnitude and phase angle loci in log-magnitude versus phase diagram D) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Magnetic amplifier is used for

A) Voltage amplification B) Power amplification C) Current amplification D) Frequency amplification

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which control action can never be used alone?

A) Proportional B) Derivative C) Integral D) Both (b) and (c)

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Nyquist stability criterion uses open loop frequency response characteristics.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Control Systems MCQ Questions & Answers | ECE