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MCQs

Total Questions : 95 | Page 9 of 10 pages
Question 81. Bandwidth is proportional to speed of response.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 82. In a simple on-off controller with differential gap, the magnitude of differential gap determines
  1.    The life of controller
  2.    Neither (a) nor (b)
  3.    The level of accuracy
  4.    Both (a) and (b)
 Discuss Question
Answer: Option D. -> Both (a) and (b)
Question 83. If the poles lie in second quadrant, damping ratio is
  1.    less than 1
  2.    more than 1
  3.    zero
  4.    1
 Discuss Question
Answer: Option A. -> less than 1
Question 84. In force current analogy, displacement x is analogous to
  1.    Magnetic flux linkage
  2.    Electrostatic energy
  3.    Voltage
  4.    Charge
 Discuss Question
Answer: Option A. -> Magnetic flux linkage
Question 85. If poles lie in first quadrant, damping ratio is
  1.    1
  2.    less than 1
  3.    More than 1
  4.    Zero
 Discuss Question
Answer: Option B. -> less than 1
Question 86. The permanent magnet field system of brushless dc servo- motor is generally on
  1.    Stator
  2.    Either (a) or (b)
  3.    Partly on stator and partly on rotor
  4.    Rotor
 Discuss Question
Answer: Option D. -> Rotor
Question 87. DC tachogenerator can be used in
  1.    Both A and B
  2.    Neither A nor B
  3.    Speed control system
  4.    Position control system
 Discuss Question
Answer: Option A. -> Both A and B
Question 88. For any transfer function, the constant phase angle loci are
  1.    A family of straight lines
  2.    A family of circles
  3.    Either (a) or (b)
  4.    Neither (a) nor (b)
 Discuss Question
Answer: Option B. -> A family of circles
Question 89. The addition of a pole to the open loop transfer function pulls the root locus
  1.    Towards right or left depending on the position of new pole
  2.    To the left and making the system more stable
  3.    To the right
  4.    None of these
 Discuss Question
Answer: Option C. -> To the right
Question 90. The distance of poles from origin depends on
  1.    Uqndamped natural frequency
  2.    Neither A nor B
  3.    Both A and B
  4.    Damping ratio
 Discuss Question
Answer: Option A. -> Uqndamped natural frequency

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