D.C. Generators MCQ Questions & Answers | Electrical Engineering

A. Series generator

B. Shunt generator

C. Long shunt compound generator

D. Any of the above

A. The brushes of opposite polarity should track each other

B. The brushes of same polarity should track each other

C. Brush position has no effect on the commutator grooving

D. All of the above

A. their rising voltage characteristics

B. unequal number of turns in their series field windings

C. unequal speed regulation of their primemovers

D. unequal series field resistances

A. Armature reaction

B. Armature resistance drop

C. Field weakening due to armature reaction and armature

D. Commutation

A. Rotary converter

B. Mercury are rectifier

C. Induction motor D.C. generator set

D. Synchronous motor D.C. generator set

A. To increase the speed and hence generated e.m.f.

B. To increase the series flux

C. So that two similar machines will pass approximately equal currents to the load

D. To reduce the combined effect of armature reaction of both machines

A. To increase the series flux

B. To increase the generated e.m.f.

C. To reduce the combined effect of armature reaction of both the machines

D. So that the two identical machines will pass approximately equal currents to the load

A. Silicon steel

B. Copper

C. Nonferrous material

D. Cast-iron

A. Using conductor of annealed copper

B. Using commutator with large number of segments

C. Using carbon brushes of superior quality

D. Using equalizer rings

A. Electromagnets

B. Permanent magnets

C. Both (A) and (B)

D. None of the above