The Design Problem MCQ

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• Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output?
  ক

  Input signal

  খ

  Output signal

  গ

  Error signal

  ঘ

  Feedback signal
• Which among the following is not an advantage of an open loop system?
  ক

  Simplicity in construction & design

  খ

  Easy maintenance

  গ

  Rare problems of stability

  ঘ

  Requirements of system re-calibration from time to time
• Which notation represents the feedback path in closed loop system representation?
  ক

  b(t)

  খ

  c(t)

  গ

  e(t)

  ঘ

  r(t)
• Which among the following represents an illustration of closed loop system?
  ক

  Automatic washing machine

  খ

  Automatic electric iron

  গ

  Bread toaster

  ঘ

  Electric hair drier
• Which among the following controls the speed of D.C. motor?
  ক

  Galvanometer

  খ

  Gauss meter

  গ

  Potentiometer

  ঘ

  Tachometer
• Into which energy signal does the position sensor convert the measured position of servomotor in servomechanisms?
  ক

  Mechanical

  খ

  Electrical

  গ

  Thermal

  ঘ

  Light
• What is the value of steady state error in closed loop control systems?
  ক

  Zero

  খ

  Unity

  গ

  Infinity

  ঘ

  Unpredictable
• A good control system should be sensitive to __________
  ক

  Internal disturbances

  খ

  Environmental parameters

  গ

  Parametric variations

  ঘ

  Input signals (except noise)
• Which system exhibits the initiation of corrective action only after the output gets affected?
  ক

  Feed forward

  খ

  Feedback

  গ

  Both a and b

  ঘ

  None of the mentioned