Transformer MCQs Quiz Worksheet PDF Download

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MCQs on Transformer Quiz PDF Download

MCQ: In transformer primary coil is connected to

  1. Ac source
  2. Dc source
  3. resistor
  4. inductor

A

MCQ: A transformer is designed to convert voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. turns on its secondary coil should be

  1. 100
  2. 200
  3. 120
  4. 480

B

MCQ: In transformer changing current in primary coil induces changing magnetic field in

  1. resistor
  2. inductor
  3. both A and B
  4. secondary coil

D

MCQ: A transformer is designed to convert voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. If it is 100% efficient, and current in secondary coil was 0.4 A then current in primary coil should be

  1. 0.08 A
  2. 0.05 A
  3. 0.02 A
  4. 0.01 A

C

MCQ: If secondary voltage is larger than primary voltage, transformer is called a

  1. positive transformer
  2. step-up transformer
  3. negative transformer
  4. step-down transformer

B