DC GENERATORS QUIZ

Is amenable to better voltage control

Has all above features

Has exciting current independent of load current

Is more stable

9.1%

11.3%

4.5%

2.8%

Excite to full voltage

Fail to excite

Excite to one half of full voltage

None of the listed here

8

2

4

6

It is expensive

Generated voltage is small

Shunt field circuit has high resistance

Terminal voltage drops considerably

Armature winding

None of the listed here

Field winding

Commutator

Frictional loss and copper loss

Field copper loss and iron loss

Copper and iron losses

Iron and friction losses

The same operation r.p.m.

Same kW rating

The same drooping voltage characteristics

Same percentage regulation

Greater than 150 V

Less than 150 V

None of these

150 V

All of these

The brushes of opposite polarity should track each other

The brushes of same polarity should track each other

Brush position has no effect on the commutator grooving