Synchronous Generators MCQs Part 12

Synchronous Generators MCQs Part 12

For the same power rating, as compared to DC Generator an alternator is

For the same power rating, as compared to DC Generator an alternator is:

1. Smaller in size
2. Larger in size
3. Of the same size
4. None of the above

Correct answer: 1. Smaller in size

The non-salient pole field construction is employed for alternators that have

The non-salient pole field construction is employed for alternators that have:

1. Low-speed
2. Medium-speed
3. High-speed
4. None of the above

Correct answer: 3. High-speed

The number of cycles generated in 6-pole alternator in one revolution are

The number of cycles generated in 6-pole alternator in one revolution are

1. 3
2. 6
3. 18
4. 24

Correct answer: 1. 3

When load on an alternator is increased, the terminal voltage also increases provided that the load PF is

When load on an alternator is increased, the terminal voltage also increases provided that the load PF is

1. Leading
2. Lagging
3. Unity
4. Zero

Correct answer: 1. Leading

Damper windings are used in alternator inorder to

Damper windings are used in alternator inorder to:

1. Prevent hunting
2. Achieve synchronism
3. Reduce windage losses
4. None of the above

Correct answer: 1. Prevent hunting