Top 80+ Solved Control Systems MCQ Questions Answer
Q. A control system in which the control action is somehow dependent on the output is known as
a. closed loop system
b. semiclosed loop system
c. open system
d. none of the above
Q. In closed loop control system, with positive value of feedback gain the overall gain of the system will
a. decrease
b. increase
c. be unaffected
d. any of the above
Q. A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
a. clutch
b. eyes
c. needle of the speedometer
d. steering wheel
Q. The initial response when tne output is not equal to input is called
a. transient response
b. error response
c. dynamic response
d. either of the above
Q. By which of the following the control action is determined when a man walks along a path ?
a. brain
b. hands
c. legs
d. eyes
Q. Which of the following devices are commonly used as error detectors in instruments ?
a. vernistats
b. microsyns
c. resolvers
d. any of the above
Q. Which of the following should be done to make an unstable system stable ?
a. the gain of the system should be decreased
b. the gain of the system should be increased
c. the number of poles to the loop transfer function should be increased
d. the number of zeros to the loop transfer function should be increased
Q. increases the steady state accuracy.
a. integrator
b. differentiator
c. phase lead compensator
d. phase lag compensator
Q. A.C. servomotor resembles
a. two phase induction motor
b. three phase induction motor
c. direct current series motor
d. universal motor
Q. As a result of introduction of negative feedback which of the following will not decrease ?
a. band width
b. overall gain
c. distortion
d. instability
Q. Regenerative feedback implies feedback with
a. oscillations
b. step input
c. negative sign
d. positive sign
Q. is an open loop control system.
a. ward leonard control
b. field controlled d.c. motor
c. stroboscope
d. metadyne
Q. A control system with excessive noise, is likely to suffer from
a. saturation in amplifying stages
b. loss of gain
c. vibrations
d. oscillations
Q. Zero initial condition for a system means
a. input reference signal is zero
b. zero stored energy
c. ne initial movement of moving parts
d. system is at rest and no energy is stored in any of its components
Q. Transfer function of a system is used to calculate which of the following ?
a. the order of the system
b. the time constant
c. the output for any given input
d. the steady state gain