Top 80+ Solved Control System MCQ Questions Answer
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 chan¬ges from maximum to minimum
d. Any of the above
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 thesystem 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. 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. In a control system integral error compensation _______ steady state error
a. increases
b. minimizes
c. does not have any effect on
d. any of the above
Q. Which of the following can be measured byLVDT?
a. Displacement
b. Velocity
c. Acceleration
d. Any of the above
Q. directly converts temperature into voltage.
a. Thermocouple
b. Potentiometer
c. Gear train
d. LVDT
Q. The transfer function technique is considered as inadequate under which of thefollowing conditions ?
a. Systems having complexities and non-linearities
b. Systems having stability problems
c. Systems having multiple input dis¬turbances
d. All of the above
Q. Which of the following is the output of a thermocouple ?
a. Alternating current
b. Direct current
c. A.C. voltage
d. D.C. voltage