Control System MCQs

Question 1

Dynamic equations are a set of equations formed on rutting together

Accepted Answer

output equations and state equations

Answer

input equations and output equations

Answer

state equations and input equations

Answer

input, output and state equations

Question 2

For changing the time constant and providing sufficient damping in the control system, the factor responsible is

Accepted Answer

second derivative of the input signal

Answer

input signal

Answer

first derivative of the input signal

Answer

all of these

Question 3

The first derivative control can be used to

Accepted Answer

both B and C above

Answer

decrease damping

Answer

decrease velocity lag error

Answer

decrease setting time

Question 4

The peak overshoot in a control system is a function of

Accepted Answer

none of these

Answer

natural frequency of oscillation con alone damped frequency of oscillation cod alone

Answer

damping ratio only

Question 5

Presence of nonlinearities in a control system tends to introduce

Accepted Answer

transient error

Answer

instability

Answer

steady state error

Answer

all of these

Question 6

In a control system, damping is proportional to

Accepted Answer

Answer

gain

Answer

impedence

Question 7

Knowledge of transfer function of a system is necessary for the calculation of

Accepted Answer

the output for a given input

Answer

the time constant

Answer

the steady state gain

Answer

the order of the system

Question 8

A system function V (s)/I (s) has a pole at s = ?2 and a zero at s = ?1. For sinusoidal current excitation, the voltage response

Accepted Answer

leads the current

Answer

is zero

Answer

lags behinds the current

Answer

is in phase with the current

Question 9

The steady state error of a control system may be minimized by

Accepted Answer

increasing the inertia of the system

Answer

decreasing the inertia of the system

Answer

decreasing the torque of servomotor

Answer

increasing the damping of the system