Top 80+ Solved Control System Engineering (CSE) MCQ Questions Answer
Q. This makes the system underdamped since the response of the system becomes a decaying sinusoid in nature.
a. 9/(s2+2s+9)
b. 16/(s2+2s+16)
c. 25/(s2+2s+25)
d. 36/(s2+2s+36)
Q. The system in originally critically damped if the gain is doubled the system will be :
a. remains same
b. overdamped
c. under damped
d. undamped
Q. The damping ratio and peak overshoot are measures of:
a. relative stability
b. speed of response
c. steady state error
d. absolute stability
Q. A system has a complex conjugate root pair of multiplicity two or more in its characteristic equation. The impulse response of the system will be:
a. a sinusoidal oscillation which decays exponentially; the system is therefore stable
b. a sinusoidal oscillation with a time multiplier ; the system is therefore unstable
c. a sinusoidal oscillation which rises exponentially ; the system is therefore unstable
d. a dc term harmonic oscillation the system therefore becomes limiting stable
Q. A ramp input applied to a unity feedback system results in 5% steady state error. The type number and zero frequency gain of the system are respectively
a. 1 and 20
b. 0 and 20
c. 0 and 1/20
d. 1 and 1/20
Q. Steady state refers to
a. error at the steady state
b. error at the transient state
c. error at both state
d. precision
Q. The disadvantages of the error constants are:
a. they do not give the information of the steady state error when the inputs are other than the three basic types
b. error constant fail to indicate the exact manner in which the error function change with time.
c. they do not give information of the steady state error and fail to indicate the exact manner in which the error function change with time
d. they give information of the steady state error
Q. The input of a controller is
a. sensed signal
b. error signal
c. desired variable value
d. signal of fixed amplitude not dependent on desired variable value
Q. Phase lag controller:
a. improvement in transient response
b. reduction in steady state error
c. reduction is settling time
d. increase in damping constant