Question

Which types of losses do not occur in the transformer?

• A. Iron losses
• B. Copper losses
• C. Mechanical losses
• D. Flux leakage

Answer 1

The correct option is C

Mechanical losses

Explanation for correct option:

1. A transformer is an electrical energy transfer device that either step up or steps down the voltage from one alternating-current circuit to one or more other circuits.
2. So we know that a transformer does not consist of any mechanical movement so, mechanical losses in a transformer are not possible.

Explanation for incorrect options:

A: Iron losses

1. Eddy currents are still produced in actual iron cores not withstanding lamination.
2. The size of the eddy current could be tiny, and some of the energy is lost as heat from the iron core.

B: Copper losses

1. Heat produced by electrical currents in the conductors of transformer windings or other electrical devices is commonly referred to as copper loss.
2. Therefore, some energy is lost as a result of the heat created by the coil's resistance.

D: Flux leakage

1. It will pass through the winding insulation and transformer insulating oil rather than the core.
2. Therefore, the primary coil's whole magnetic flux is not connected to the secondary coil.

Hence, the correct option is C.