Top 80+ Solved Control System MCQ Questions Answer

From 1 to 15 of 77

Q. In an open loop control system

a. Output is independent of control input

b. Output is dependent on control input

c. Only system parameters have effect on the control output

d. None of the above

  • a. Output is independent of control input

Q. For open control system which of the following statements is incorrect ?

a. Less expensive

b. Recalibration is not required for maintaining the required quality of the output

c. Construction is simple and maintenance easy

d. Errors are caused by disturbances

  • b. Recalibration is not required for maintaining the required quality of the output

Q. A control system in which the control action is somehow dependent on the output isknown as

a. Closed loop system

b. Semiclosed loop system

c. Open system

d. None of the above

  • a. Closed loop system

Q. In closed loop control system, with positive value of feedback gain the overall gain ofthe system will

a. decrease

b. increase

c. be unaffected

d. any of the above

  • a. decrease

Q. Which of the following is an open loop control system ?

a. Field controlled D.C. motor

b. Ward leonard control

c. Metadyne

d. Stroboscope

  • a. Field controlled D.C. motor

Q. Which of the following statements is not necessarily correct for open control system ?

a. Input command is the sole factor responsible for providing the control action

b. Presence of non-linearities causes malfunctioning

c. Less expensive

d. Generally free from problems of non-linearities

  • b. Presence of non-linearities causes malfunctioning

Q. In open loop system

a. the control action depends on the size of the system

b. the control action depends on system variables

c. the control action depends on the input signal

d. the control action is independent of the output

  • d. the control action is independent of the output

Q. has tendency to oscillate.

a. Open loop system

b. Closed loop system

c. Both a) and b)

d. Neither a) nor b)

  • b. Closed loop system

Q. A good control system has all the following features except

a. good stability

b. slow response

c. good accuracy

d. sufficient power handling capacity

  • b. slow response

Q. A car is running at a constant speed of 50 km/h, which of the following is the feedbackelement for the driver ?

a. Clutch

b. Eyes

c. Needle of the speedometer

d. Steering wheel

  • c. Needle of the speedometer

Q. The initial response when the output is not equal to input is called

a. Transient response

b. Error response

c. Dynamic response

d. Either of the above

  • a. Transient response

Q. A control system working under unknown random actions is called

a. computer control system

b. digital data system

c. stochastic control system

d. adaptive control system

  • c. stochastic control system

Q. An automatic toaster is a ______ loop control system.

a. open

b. closed

c. partially closed

d. any of the above

  • a. open

Q. Any externally introduced signal affecting the controlled output is called a

a. feedback

b. stimulus

c. signal

d. gain control

  • b. stimulus

Q. A closed loop system is distinguished from open loop system by which of the following ?

a. Servomechanism

b. Feedback

c. Output pattern

d. Input pattern

  • b. Feedback
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