1000+ Electronics and Communication Questions and Answers Pdf - 1

Question: 1

Damping ratio is defined as the ratio of

(A) actual damping to critical damping

(B) damped natural frequency to actual damping

(C) critical damping to actual damping

(D) undamped natural frequency to critical damping

Question: 2

In control system, the feedback

(A) increases both the error and sensitivity of the system to parameter variation

(B) reduces the error and the sensitivity of the system to parameter variation

(C) increases both the error and sensitivity of the system to the parameter variation

(D) reduces the error and increases the sensitivity of the system to parameter variation

Question: 3

Which of the following is not a desirable property of a servomotor in feedback control system?

(A) relation between electrical control system and rotor speed should be non-linear

(B) it should be reversible

(C) torque speed characteristic should be linear

(D) response should be fast

Question: 4

In force voltage analogy, viscous friction constant B is analogous to

(A) capacitance

(B) inductance

(C) reciprocal of resistance

(D) resistance

Question: 5

The peak overshoot of step-input response of an underdamped second order system is an indication of

(A) natural frequency of the system

(B) damping ratio of the system

(C) setting time of the system

(D) rise time of the system