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. By which of the following the system response can be tested better?

  • (A) Ramp input signal
  • (B) Sinusoidal input signal
  • (C) Unit impulse input signal
  • (D) Exponentially decaying signal
πŸ’¬ Discuss
βœ… Correct Answer: (C) Unit impulse input signal

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
πŸ’¬ Discuss
βœ… Correct Answer: (D) State model representatives

Q. ________ directly converts temperature into voltage.

  • (A) Thermocouple
  • (B) Potentiometer
  • (C) Gear train
  • (D) LVDT
πŸ’¬ Discuss
βœ… Correct Answer: (A) Thermocouple

Q. Due to which of the following reasons excessive bond width in control systems should be avoided?

  • (A) It leads to slow speed of response
  • (B) It leads to low relative stability
  • (C) Noise is proportional to band width
  • (D) None of the above
πŸ’¬ Discuss
βœ… Correct Answer: (C) Noise is proportional to band width

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
πŸ’¬ Discuss
βœ… Correct Answer: (B) Recalibration is not required for maintaining the required quality of the output

Q. From which of the following transfer function can be obtained?

  • (A) Signal flow graph
  • (B) Analogous table
  • (C) Output-input ratio
  • (D) Standard block system
πŸ’¬ Discuss
βœ… Correct Answer: (A) Signal flow graph

Q. ___________ has tendency to oscillate.

  • (A) Open loop system
  • (B) Closed loop system
  • (C) Both (a) and (b)
  • (D) Neither (a) nor (b)
πŸ’¬ Discuss
βœ… Correct Answer: (B) Closed loop system

Q. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

  • (A) not necessarily stable
  • (B) stable
  • (C) unstable
  • (D) always unstable
πŸ’¬ Discuss
βœ… Correct Answer: (A) not necessarily stable

Q. If the gain of the critical damped system is increased it will behave as

  • (A) oscillatory
  • (B) critically damped
  • (C) overdamped
  • (D) underdamped
πŸ’¬ Discuss
βœ… Correct Answer: (D) underdamped

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