13) Why pre heating is necessary for motors before varnishing in rewinding process?

To dry the varnish quickly in winding

To easy flow of varnish in the winding

To increase the insulation resistance value

To drive out the moisture in between winding layers

Answer is:

To drive out the moisture in between winding layers

Ground test

Polarity test

Continuity test

Short circuit test

Answer is:

Tong Tester

Internal Growler

External Growler

Digital multimeter

Answer is:

Protect from heavy load

Protect against high voltage

Allow for continuous over loading

Protect against dead short circuit

Answer is:

Explanation:

Thermal cutout in addition to fuse in A.C motor circuit is used to allow for continuous overloading.

Universal motor

Permanent capacitor motor

3 Phase slip ring induction motor

3 Phase single squirrel cage induction motor

Answer is: