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MCQs

Total Questions : 125 | Page 4 of 13 pages
Question 31. In a system low friction coefficient facilitates
  1.    Reduced velocity lag error
  2.    Increased velocity lag error
  3.    Increased speed of response
  4.    Reduced time constant of the system
 Discuss Question
Answer: Option A. -> Reduced velocity lag error
Question 32. As a result of introduction of negative feedback which of the following will not decrease?
  1.    Band width
  2.    Overall gain
  3.    Distortion
  4.    Instability
 Discuss Question
Answer: Option A. -> Band width
Question 33. An be extended to systems which are time-varying ?
  1.    Bode-Nyquist stability methods
  2.    Transfer functions
  3.    Root locus design
  4.    State model representatives
 Discuss Question
Answer: Option D. -> State model representatives
Question 34. The term backlash is associated with
  1.    servomotors
  2.    induction relays
  3.    gear trains
  4.    any of the above
 Discuss Question
Answer: Option C. -> gear trains
Question 35. A closed loop system is distinguished from open loop system by which of the following ?
  1.    Servomechanism
  2.    Feedback
  3.    Output pattern
  4.    Input pattern
 Discuss Question
Answer: Option B. -> Feedback
Question 36. Transfer function of a system is used to calculate which of the following ?
  1.    The order of the system
  2.    The time constant
  3.    The output for any given input
  4.    The steady state gain
 Discuss Question
Answer: Option C. -> The output for any given input
Question 37. In a stable control system backlash can cause which of the following ?
  1.    Underdamping
  2.    Overdamping
  3.    Poor stability at reduced values of open loop gain
  4.    Low-level oscillations
 Discuss Question
Answer: Option D. -> Low-level oscillations
Question 38. Phase margin of a system is used to specify which of the following ?
  1.    Frequency response
  2.    Absolute stability
  3.    Relative stability
  4.    Time response
 Discuss Question
Answer: Option C. -> Relative stability
Question 39. The transfer function is applicable to which of the following ?
  1.    Linear and time-in variant systems
  2.    Linear and time-variant systems
  3.    Linear systems
  4.    Non-linear systems
  5.    None of the above
 Discuss Question
Answer: Option A. -> Linear and time-in variant systems
Question 40. The second derivative input signals modify which of the following ?
  1.    The time constant of the system
  2.    Damping of the system
  3.    The gain of the system
  4.    The time constant and suppress the oscillations
  5.    None of the above
 Discuss Question
Answer: Option D. -> The time constant and suppress the oscillations

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