DC GENERATORS QUIZ

Facilitate commutation

Reduce losses

Save iron

Reduce armature reaction

Data is insufficient

Armature current

Field current

None of the listed here

None of the listed here

Excite to full voltage

Excite to one half of full voltage

Fail to excite

6

None of the listed here

2

4

External resistance = internal characteristic armature reaction

Magnetization characteristic = external characteristic

Internal characteristic = magnetization characteristic ohmic drop

External characteristic = magnetization characteristic ohmic drop armature reaction

All of these

Level compounded generator

Separately excited generator

Self-excited generator

High resistance winding material

Iron commutator

Lap winding

Magnetic material of high permeability

None of the listed here

Aid

Sometime aid, sometime oppose

Oppose

Strengthns the flux at the leading

Weaknes the flux at the trailing

Weaknes the flux at the leading

None of the listed here

Double the number of poles

Half the number of poles

Same as the number of poles

Two