DC Generator MCQs Part 1

Electrical Engineering MCQs on DC Generator Part 1

Of below mentioned generators, the generator that will be in a position to build up without any residual magnetism in the poles

Of below mentioned generators, the generator that will be in a position to build up without any residual magnetism in the poles

1. Compound generator
2. Series generator
3. Shunt generator
4. None of these

Correct answer: 4. None of these

As a result of armature reaction, the reduction in the total mutual air gap flux in a generator is roughly around

As a result of armature reaction, the reduction in the total mutual air gap flux in a generator is roughly around

1. 10 percent
2. 20 percent
3. 40 percent
4. 5 percent

Correct answer: 4. 5 percent

The armature of generator is laminated in order to

The armature of generator is laminated in order to

1. Insulate the core
2. Provide the bulk
3. Reduce eddy current loss
4. Reduce the bulk

Correct answer: 3. Reduce eddy current loss

In order to reduce sparking at brushes in a generator, the self-induced EMF in the coil is neutralized by all of following except

In order to reduce sparking at brushes in a generator, the self-induced EMF in the coil is neutralized by all of following except

1. Compensating winding
2. Dummy coils
3. Interpoles
4. Shifting of axis of brushes

Correct answer: 2. Dummy coils

The insulating material used between the commutator segments is usually

The insulating material used between the commutator segments is usually

1. Graphite
2. Insulating varnish
3. Mica
4. Paper

Correct answer: 3. Mica