If dc voltage is applied to the primary of a transformer it may

a) Work b) Burn the winding c) Not work d) Give a lower voltage on the secondary side

Transformer works on the principle of

a) Self-induction b) Mutual induction c) Faraday’s law of electromagnetic induction d) Self and mutual induction both

The main purpose of using core in transformer is to?

a) Decrease reluctance of the common magnetic circuit. b) Decrease iron losses. c) Prevent hysteresis loses. d) Prevent eddy current […]

The main purpose of using core in a transformer is to

(a) decrease iron losses (b) prevent eddy current loss (c) eliminate magnetic hysteresis (d) decrease reluctance of the common magnetic […]

In an ideal transformer

(a) windings have no resistance (b) core has no losses (c) core has infinite permeability (d) all of the above.