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MCQs

Total Questions : 125 | Page 3 of 13 pages
Question 21. Which of the following statements is correct for any closed loop system ?
  1.    All the co-efficients can have zero value
  2.    All the co-efficients are always non-zero
  3.    Only one of the static error co-efficients has a finite non-zero value
  4.    None of the above
 Discuss Question
Answer: Option C. -> Only one of the static error co-efficients has a finite non-zero value
Question 22. In a system zero initial condition means that
  1.    The system is at rest and no energy is stored in any of its components
  2.    The system is working with zero stored energy
  3.    The system is working with zero reference signal
  4.    None of the above
 Discuss Question
Answer: Option A. -> The system is at rest and no energy is stored in any of its components
Question 23. A control system in which the control action is somehow dependent on the output is known as
  1.    Closed loop system
  2.    Semiclosed loop system
  3.    Open system
  4.    None of the above
 Discuss Question
Answer: Option A. -> Closed loop system
Question 24. Any externally introduced signal affecting the controlled output is called a
  1.    feedback
  2.    stimulus
  3.    signal
  4.    gain control
 Discuss Question
Answer: Option B. -> stimulus
Question 25. Technique gives quick transient and stability response
  1.    Root locus
  2.    Bode
  3.    Nyquist
  4.    Nichols
 Discuss Question
Answer: Option A. -> Root locus
Question 26. Increases the steady state accuracy.
  1.    Integrator
  2.    Differentiator
  3.    Phase lead compensator
  4.    Phase lag compensator
 Discuss Question
Answer: Option A. -> Integrator
Question 27. If the gain of the critical damped system is increased it will behave as
  1.    oscillatory
  2.    critically damped
  3.    overdamped
  4.    underdamped
  5.    none of the above
 Discuss Question
Answer: Option D. -> underdamped
Question 28. In an automatic control system which of the following elements is not used ?
  1.    Error detector
  2.    Final control element
  3.    Sensor
  4.    Oscillator
 Discuss Question
Answer: Option D. -> Oscillator
Question 29. Which of the following can be measured by the use of a tachogenerator ?
  1.    Acceleration
  2.    Speed
  3.    Speed and acceleration
  4.    Displacement
  5.    None of the above
 Discuss Question
Answer: Option B. -> Speed
Question 30. A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
  1.    Clutch
  2.    Eyes
  3.    Needle of the speedometer
  4.    Steering wheel
  5.    None of the above
 Discuss Question
Answer: Option C. -> Needle of the speedometer

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