Top 80+ Solved Control Systems MCQ Questions Answer
Q. Which of the following can be measured by the use of a tachogenerator ?
a. acceleration
b. speed
c. speed and acceleration
d. displacement
Q. is not a final control element.
a. control valve
b. potentiometer
c. electropneumatic converter
d. servomotor
Q. Which of the following is the definition of proportional band of a controller ?
a. the range of air output as measured variable varies from maximum to minimum
b. the range of measured variables from set value
c. the range of measured variables through which the air output changes from maximum to minimum
d. any of the above
Q. In pneumatic control systems the control valve used as final control element converts
a. pressure signal to electric signal
b. pressure signal to position change
c. electric signal to pressure signal
d. position change to pressure signal
Q. Pressure error can be measured by which of the following ?
a. differential bellows and straingauge
b. selsyn
c. strain gauge
d. strain gauge and potentiometer
Q. Which of the following devices is used for conversion of co-ordinates ?
a. microsyn
b. selsyn
c. synchro-resolver
d. synchro-transformer
Q. The effect of error damping is to
a. provide larger settling lime
b. delay the response
c. reduce steady state error
d. any of the above
Q. technique gives quick transient and stability response
a. root locus
b. bode
c. nyquist
d. nichols
Q. A phase lag lead network introduces in the output
a. lag at all frequencies
b. lag at high frequencies and lead at low frequencies
c. lag at low frequencies and lead at high frequencies
d. none of the above
Q. Which of the following is the non-linearity caused by servomotor ?
a. static friction
b. backlash
c. saturation
d. none of the above
Q. can be extended to systems which are time-varying ?
a. bode-nyquist stability methods
b. transfer functions
c. root locus design
d. state model representatives
Q. When the initial conditions of a system are specified to be zero it implies that the system is
a. at rest without any energy stored in it
b. working normally with reference input
c. working normally with zero reference input
d. at rest but stores energy
Q. Which of the following is an electromagnetically device ?
a. induction relay
b. thermocouple
c. lvdt
d. any of the above
Q. A differentiator is usually not a part of a control system because it
a. reduces damping
b. reduces the gain margin
c. increases input noise
d. increases error
Q. If the gain of the critical damped system is increased it will behave as
a. oscillatory
b. critically damped
c. overdamped
d. underdamped