DC GENERATORS QUIZ

The overall efficiency of a dc generator is maximum when its variable loss is equal to

Mechanical loss

Stray loss

Constant loss

Iron loss

TRUE ANSWER : ?
YOUR ANSWER : ?

The efficiency of a dc generator means its

Electrical efficiency

None of the listed here

Mechanical efficiency

Overall efficiency

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following could be lamina proximately the thickness of laminations of a D.C. machine?

0.005 mm

5 m

0.5 m

0.05 mm

TRUE ANSWER : ?
YOUR ANSWER : ?

In dc generator, the constant losses is equal to

Stray losses

None of the listed here

Stray losses plus shunt cu loss

Mechanical losses

TRUE ANSWER : ?
YOUR ANSWER : ?

If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will

Be quadrupled

Be halved

Remain the same

Be doubled

TRUE ANSWER : ?
YOUR ANSWER : ?

Due to armature reaction, the main pole flux of a dc generator is

Distorted only

None of the listed here

Weakened as well as distorted

Weakend only

TRUE ANSWER : ?
YOUR ANSWER : ?

In dc generator, the generated voltage depend upon

Both speed and flux

Speed only

Flux only

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The efficiency of a dc generator is maximum when its variable loss is

None of the listed here

Equal to Constant loss

Equal to double the constant loss

Equal to half of constant loss

TRUE ANSWER : ?
YOUR ANSWER : ?

The armature conductors of a 6 pole, lap wound dc generator are divided into

6 parallel paths

4 parallel paths

3 parallel paths

2 parallel paths

TRUE ANSWER : ?
YOUR ANSWER : ?

A 4-pole , lap wound dc shunt generator has an armature winding consisting of 220 turns each of 0.004 Ω. The armature resistance is

0.025 Ω

0.055 Ω

0.5 Ω

1 Ω

TRUE ANSWER : ?
YOUR ANSWER : ?

↑