Top 80+ Solved Control Systems MCQ Questions Answer
Q. A conditionally stable system exhibits poor stability at
a. low frequencies
b. reduced values of open loop gain
c. increased values of open loop gain
d. none of the above
Q. The type 2 system has ______ at the origin.
a. no net pole
b. net pole
c. simple pole
d. two poles
Q. The position and velocity errors of a type-2 system are
a. constant, constant
b. constant, infinity
c. zero, constant
d. zero, zero
Q. Velocity error constant of a system is measured when the input to the system is unit _______ function.
a. parabolic
b. ramp
c. impulse
d. step
Q. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is
a. not necessarily stable
b. stable
c. unstable
d. always unstable
Q. Which of the following is the best method for determining the stability and transient response ?
a. root locus
b. bode plot
c. nyquist plot
d. none of the above
Q. Phase margin of a system is used to specify which of the following ?
a. frequency response
b. absolute stability
c. relative stability
d. time response
Q. Addition of zeros in transfer function causes which of the following ?
a. lead-compensation
b. lag-compensation
c. lead-lag compensation
d. none of the above
Q. technique is not applicable to nonlinear system ?
a. nyquist criterion
b. quasi linearization
c. functional analysis
d. phase-plane representation
Q. In order to increase the damping of a badly underdamped system which of following compensators may be used ?
a. phase-lead
b. phase-lag
c. both (a) and (b)
d. either (a) and (b)
Q. The phase lag produced by transportation relays
a. is independent of frequency
b. is inverseh’proportional to frequency
c. increases linearly with frequency
d. decreases linearly with frequency