Control System MCQs

Question 1

The function has slope of 1 + jar

Accepted Answer

?20 dB/decade

Answer

+20 dB/decade

Answer

+6 dB/decade

Answer

?6 dB/decade

Question 2

Transfer function of a system is : The corner frequencies will be

Accepted Answer

4 and 2

Answer

?4 and ?2

Answer

0.25 and 0.5

Answer

?0.25 and 0.5

Question 3

For small value of gain k, the root must be

Accepted Answer

near the poles of the loop transfer function

Answer

at origin

Answer

at infinity

Answer

far away from the poles of the bop transfer functions

Question 4

The minimum phase transfer function is oile having

Accepted Answer

poles and zeros in LHS

Answer

poles and zeros in RHS

Answer

poles in LHS and zeros in RHS

Answer

poles in RI1S and zeros in RHS

Question 5

A transfer function with one or more zeros in the RHS plane is called

Accepted Answer

non-minimum phase transfer function

Answer

minimum phase transfer function

Answer

all pass transfer function

Answer

none of these

Question 6

An octave frequency range given by co2ko1 is equal to 360?

Accepted Answer

2

Answer

4

Answer

6

Answer

10

Question 7

A decade frequency range given by co21o)1 equal to is

Accepted Answer

10

Answer

2

Answer

4

Answer

6

Question 8

The response of a control system increases in magnitude with time

Accepted Answer

if all the roots are in the RHS of s-plane

Answer

if there are more roots on the RHS than on LHS

Answer

if one or more roots are found in RHS of s-plane

Answer

none of these

Question 9

In any system, excessive bandwidth is avoided because

Accepted Answer

noise power produced in the system is proportional to bandwidth

Answer

is results in lower stability

Answer

it results in lower speed of response

Answer

none of these