Transformers MCQ - Electrician (Set-1) with Answers

Transformers MCQ - Electrician (Set-1) with Answers

91) Calculate the current in low voltage side of the 1 KVA, 240 V/120 V single phase transformer.

Answer is:

8.33 amperes

92) A 5KVA, 400V/200V transformer delivers a current of 25 Amps in secondary. What is the current in primary side ?

Answer is:

12.5 Amps

93) A 100 KVA, 2400V/240V, 50Hz transformer has 300 turns on the secondary winding. Calculate the number of turns in primary winding ?

Answer is:

3000 turns

94) If the full load iron loss of the transformer is 1000 watts, what will be the iron loss at half load ?

Answer is:

1000 watts

95) If the input of the small transformer is 15 VA, what will be the output in VA when the efficiency is taken as 80% ?

Answer is:

12 VA