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MCQs

Total Questions : 120 | Page 8 of 12 pages
Question 71. Wheatstone bridge is used to measure ________________
  1.    Resistance
  2.    Inductance
  3.    Capacitance
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 72. Anderson bridge is an AC bridge.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 73. Which of the following represents DC Bridge?
  1.    Used to measure impedance
  2.    AC supply for excitation
  3.    Wein bridge
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Answer: (d).None of the mentioned
Question 74. Which of the following represents the arrangement of Wheatstone bridge?
  1.    Potentiometer
  2.    Weinbridge
  3.    Schering bridge
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Weinbridge
Answer: (b).Weinbridge
Question 75. Which of the following is not an AC bridge?
  1.    Kelvin bridge
  2.    Maxwell bridge
  3.    Hay bridge
  4.    Schering bridge
 Discuss Question
Answer: Option A. -> Kelvin bridge
Answer: (a).Kelvin bridge
Question 76. Difference between input signal and feedback signal is known as ____________
  1.    Feedback factor
  2.    Error signal
  3.    Output signal
  4.    Input signal
 Discuss Question
Answer: Option B. -> Error signal
Answer: (b).Error signal
Question 77. Which of the following change has been happened to output impedance in the negative feedback system?
  1.    Increases
  2.    Decreases
  3.    No change
  4.    Negative
 Discuss Question
Answer: Option B. -> Decreases
Answer: (b).Decreases
Question 78. Voltage gain improves on the application of negative feedback.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 79. Error signal in positive feedback system will be ____________ input signal.
  1.    Greater than
  2.    Lower than
  3.    Equal to
  4.    Negative of
 Discuss Question
Answer: Option A. -> Greater than
Answer: (a).Greater than
Question 80. Which of the following represents complete expression for a closed loop system?
  1.    Aβ
  2.    A/ Aβ
  3.    A/ (1+Aβ)
  4.    1/ (1+Aβ)
 Discuss Question
Answer: Option C. -> A/ (1+Aβ)
Answer: (c).A/ (1+Aβ)

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