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MCQs

Total Questions : 199 | Page 9 of 20 pages
Question 81. If the phasors are drawn to represent the maximum values instead of the rms values, what would happen to the phase angle between quantities?
  1.    Increases
  2.    Decreases
  3.    Remains constant
  4.    Becomes zero
 Discuss Question
Answer: Option C. -> Remains constant
Answer: (c).Remains constant
Question 82. The rms value is 0.707 times the _________ value.
  1.    Peak
  2.    Instantaneous
  3.    Average
  4.    DC
 Discuss Question
Answer: Option A. -> Peak
Answer: (a).Peak
Question 83. The rms value is _________ times the maximum value.
  1.    1.414
  2.    0.5
  3.    2
  4.    0.707
 Discuss Question
Answer: Option D. -> 0.707
Answer: (d).0.707
Question 84. The value of a given waveform at any instant time is termed as ___________
  1.    Waveform
  2.    Instantaneous value
  3.    Cycle
  4.    Period
 Discuss Question
Answer: Option B. -> Instantaneous value
Answer: (b).Instantaneous value
Question 85. The maximum instantaneous value measured from zero value is known as?
  1.    Peak value
  2.    Peak to peak value
  3.    Cycle
  4.    Period
 Discuss Question
Answer: Option A. -> Peak value
Answer: (a).Peak value
Question 86. If the peak to peak voltage is 10V, calculate the peak voltage.
  1.    10V
  2.    2V
  3.    4V
  4.    5V
 Discuss Question
Answer: Option D. -> 5V
Answer: (d).5V
Question 87. What is the correct relation between the peak value and peak to peak value for a sinusoidal waveform?
  1.    Vp=4Vp-p
  2.    Vp=Vp-p
  3.    Vp-p=2Vp
  4.    Vp=2Vp-p
 Discuss Question
Answer: Option C. -> Vp-p=2Vp
Answer: (c).Vp-p=2Vp
Question 88. The maximum variation between the maximum positive and the maximum negative value is known as?
  1.    Peak value
  2.    Peak to peak value
  3.    Cycle
  4.    Period
 Discuss Question
Answer: Option B. -> Peak to peak value
Answer: (b).Peak to peak value
Question 89. What happens to the frequency if the number of pairs of poles increases?
  1.    Increases
  2.    Decreases
  3.    Remains the same
  4.    Becomes zero
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 90. Calculate the number of revolutions if the frequency is 15kHz and the paired poles are 50.
  1.    100
  2.    200
  3.    300
  4.    400
 Discuss Question
Answer: Option C. -> 300
Answer: (c).300

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