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MCQs

Total Questions : 395 | Page 40 of 40 pages
Question 391. 4. If load angle of a 4-pole synchronous motor is 80 (elect.), its value in mechanical degrees is
  1.    4
  2.    2
  3.    0.5
  4.    0.25
 Discuss Question
Answer: Option A. -> 4
Question 392. 9.  Synchronous capacitor is
  1.    an ordinary static capacitor bank
  2.    an over-excited synchronous motor driving mechanical load
  3.    an over-excited synchronous motor running without mechanical load
  4.    none of the above
 Discuss Question
Answer: Option C. -> an over-excited synchronous motor running without mechanical load
Question 393. 8.  The maximum value of torque in a synchronous motor is degrees electrical.
  1.    45
  2.    90
  3.    between 45 and 90
  4.    below 60
 Discuss Question
Answer: Option B. -> 90
Question 394. 5.  The maximum value of torque in a synchronous motor is degrees electrical.
  1.    45
  2.    90
  3.    between 45 and 90
  4.    below 60
 Discuss Question
Answer: Option B. -> 90
Question 395. 6.  Synchronous capacitor is
  1.    an ordinary static capacitor bank
  2.    an over-excited synchronous motor driving mechanical load
  3.    an over-excited synchronous motor running without mechanical load
  4.    none of the above
 Discuss Question
Answer: Option C. -> an over-excited synchronous motor running without mechanical load

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