Control System MCQs

Question 1

In the transfer function of a system, there is present a zero in the mirror image position for every pole in the LHS half plane. This system is called

Accepted Answer

all pass system

Answer

minimum phase system

Answer

non-minimum phase system

Answer

all stop system

Question 2

Which of the following terms is not a form of nonlinearity for a control system?

Accepted Answer

none of these

Answer

saturation backlash

Answer

square-law transfer characteristics

Answer

all of these

Question 3

The transportation delay in a distributed system causes reduced stability because it produces

Accepted Answer

phase lag

Answer

transients

Answer

attenuation

Answer

both attenuation and phase lag

Question 4

Bandwidth of control system is used as a means of specifying performance relating to

Accepted Answer

speed of response

Answer

stability of the system

Answer

constant gain

Answer

none of these

Question 5

Nichols chart is useful in determining

Accepted Answer

closed loop frequency response

Answer

open loop frequency response

Answer

open and closed loop frequency responses

Answer

none of these

Question 6

Loop transfrr function zeros are the same as

Accepted Answer

zeros of G(s) H(s)

Answer

pole of G(s) H(s)

Answer

poleof 1 + G(s) H(s)

Answer

pole of 1 + G(s) H(s)

Question 7

Closed loop poles are

Accepted Answer

zeros of 1 + G(s) H(s)

Answer

zeros of G(s) H(s)

Answer

pole of G(s) H(s)

Answer

pole of 1 + G(s) H(s)

Question 8

Which of the following technique is not applicable to nonlinear system ?

Accepted Answer

Nyquist criterion

Answer

functional analysis

Answer

Quasi linearization

Answer

phase-plane representation

Question 9

Backlash in a stable control system may cause:

Accepted Answer

low level oscillations

Answer

underdamping

Answer

overdamping

Answer

high level