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Transformers Electrical Engineering Quiz | Transformers Electrical Engineering MCQs with Answers

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Free download in PDF Transformers Electrical Engineering MCQs with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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101 A good voltage regulation of a transformer means
[A] output voltage fluctuation from no load to full load is least
[B] output voltage fluctuation with power factor is least
[C] difference between primary and secondary voltage is least
[D] difference between primary and secondary voltage is maximum
Answer: output voltage fluctuation from no load to full load is least
102 In a transformer the resistance between its primary and secondary should be
[A] zero
[B] 10 Q
[C] 1000 Q
[D] infinity
Answer: infinity

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103 The secondary of a current transformer is always short-circuited under operating conditions because it
[A] avoids core saturation and high voltage induction
[B] is safe to human beings
[C] protects the primary circuit
[D] none of the above
Answer: avoids core saturation and high voltage induction
104 Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect ?
[A] Its secondary current is 5 A
[B] Its secondary voltage is 400 V
[C] Its rating is 2 kVA
[D] Its secondary current is 20 A
Answer: Its secondary current is 20 A
105 In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are
[A] hysteresis and eddy current losses
[B] friction and windage losses
[C] copper losses
[D] none of the above
Answer: hysteresis and eddy current losses

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