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MCQs

Total Questions : 80 | Page 8 of 8 pages
Question 71. What is the operating range of X-Y plotter?
  1.    Below 5Hz
  2.    Above 10Hz
  3.    Above 1 KHz
  4.    Very high frequency
 Discuss Question
Answer: Option A. -> Below 5Hz
Answer: (a).Below 5Hz
Question 72. Rejection capability of Phase sensitive detector is depended on the averaging time of smoothing filter.
  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. Phase-Sensitive detectors are used for measuring phase of ______________
  1.    Sinusoidal signals only
  2.    Non periodic signals only
  3.    Periodic signals only
  4.    Both periodic and non-periodic signals
 Discuss Question
Answer: Option C. -> Periodic signals only
Answer: (c).Periodic signals only
Question 74. What is the use of flip-flop in electronic phase meters?
  1.    To provide a delay
  2.    To provide stability
  3.    To save data for particular time duration
  4.    To produce rectangular pulse
 Discuss Question
Answer: Option D. -> To produce rectangular pulse
Answer: (d).To produce rectangular pulse
Question 75. What is the expression for phase angle using X-Y plotter? (Assume t₀ be time interval between zero crossing of signals and T be time period of signals).
  1.    (360T₀) ⁄ t₀
  2.    (180 T₀) ⁄ t₀
  3.    (360 t₀) ⁄ T₀
  4.    (180 t₀) ⁄ T₀
 Discuss Question
Answer: Option C. -> (360 t₀) ⁄ T₀
Answer: (c).(360 t₀) ⁄ T₀
Question 76. Which of the following statement is correct for impedance?
  1.    For ideal resistance and ideal inductor it is purely real
  2.    For ideal resistance and ideal inductor it is purely imaginary
  3.    For ideal resistance it is purely real, and for ideal inductor it is purely imaginary
  4.    For ideal resistor it is purely imaginary, and for ideal inductor it is purely real
 Discuss Question
Answer: Option C. -> For ideal resistance it is purely real, and for ideal inductor it is purely imaginary
Answer: (c).For ideal resistance it is purely real, and for ideal inductor it is purely imaginary
Question 77. What is the advantage of Owens Bridge over other AC bridges?
  1.    High quality factor
  2.    Can measure inductance over wide range
  3.    Both high Q factor and wide range operation
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Both high Q factor and wide range operation
Answer: (c).Both high Q factor and wide range operation
Question 78. What is the purpose of Owens Bridge?
  1.    Measurement of resistance
  2.    Measurement of current
  3.    Measurement of reactance
  4.    Measurement of voltage
 Discuss Question
Answer: Option C. -> Measurement of reactance
Answer: (c).Measurement of reactance
Question 79. Which of the following range represents the quality factor of Owens Bridge?
  1.    Less than 1
  2.    1 to 10
  3.    Very high
  4.    Negligible
 Discuss Question
Answer: Option C. -> Very high
Answer: (c).Very high
Question 80. What is the Common Mode Rejection Ratio?
  1.    Output of a differential amplifier
  2.    Ability of an amplifier to reject common mode signals
  3.    Ability of an amplifier to accept common mode signals
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Ability of an amplifier to reject common mode signals
Answer: (b).Ability of an amplifier to reject common mode signals

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