Name: Energy Losses in a Transformer
Uploaded: 2019-07-19
Duration: 8 min 12 s
Description: There are different types of energy losses in a transformer. This video explains those losses in detail and also talks about the efficiency of ideal and prac...

Question

Name the material of core in (a) electric bell, (b) electromagnet (c) d.c motor, (d) an a.c. generator and (e) transformer.

Accepted Answer

The material of the core in all the given things is soft iron core.

Electric bell: The core of an electric bell is made up of soft iron as it will be magnetized temporarily. But if the steel is used for making of core it will become permanently magnetized.

Electromagnet: for the making of an electromagnet core, it should be of soft iron that would make the magnetic field stronger.

D.c motor: Armature core in d.c. the motor is made up of thin pieces of iron. Individual thin pieces together form armature called laminations. These laminations are insulated by lacquer coating. To prevent eddy current.

A.c generator: There is an armature, that is made up of soft iron coil wounded with the insulated copper wire.

Transformer: The central iron core in a transformer is made up of soft iron so that hysterisis loss of energy in the core gets minimised.

Name the material of core in (a) electric bell, (b) electromagnet (c) d.c motor, (d) an a.c. generator and (e) transformer.

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