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
πŸ’¬ Discuss
βœ… Correct Answer: (D) Eyes

Q. is a closed loop system.

  • (A) Auto-pilot for an aircraft
  • (B) Direct current generator
  • (C) Car starter
  • (D) Electric switch
πŸ’¬ Discuss
βœ… Correct Answer: (A) Auto-pilot for an aircraft

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
πŸ’¬ Discuss
βœ… Correct Answer: (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
πŸ’¬ Discuss
βœ… Correct Answer: (B) The gain of the system should be increased

Q. increases the steady state accuracy.

  • (A) Integrator
  • (B) Differentiator
  • (C) Phase lead compensator
  • (D) Phase lag compensator
πŸ’¬ Discuss
βœ… Correct Answer: (A) Integrator

Q. As a result of introduction of negative feedback which of the following will not decrease ?

  • (A) Band width
  • (B) step input
  • (C) negative sign
  • (D) positive sign
πŸ’¬ Discuss
βœ… Correct Answer: (D) positive sign

Q. Regenerative feedback implies feedback with

  • (A) oscillations
  • (B) reference and input
  • (C) input and feedback signal
  • (D) output and feedback signal
πŸ’¬ Discuss
βœ… Correct Answer: (A) oscillations

Q. is an open loop control system.

  • (A) Ward Leonard control
  • (B) Field controlled D.
  • (C) Stroboscope
  • (D) Metadyne
πŸ’¬ Discuss
βœ… Correct Answer: (B) Field controlled D.

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
πŸ’¬ Discuss
βœ… Correct Answer: (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
πŸ’¬ Discuss
βœ… Correct Answer: (C) The output for any given input

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