D.C. Generators

A. is the same as that of the main pole ahead
B. is the same as that of the immediately preceding pole
C. is opposite to that of the main pole ahead
D. is neutral as these poles do not play part in generating e.m.f.

A. almost zero
B. less than no load terminal voltage
C. more than no load terminal voltage
D. equal to no-load terminal voltage

A. flux density
B. reluctance
C. ampere-turns
D. resistance

A. Series generator
B. Shunt generator
C. Compound generator
D. None of the above

A. Series generator
B. Shunt generator
C. Compound generator
D. Separately excited generator

A. r.p.m. is more than 300
B. r.p.m. is less than 300
C. number of poles is 4
D. number of poles is 2

A. series generator
B. shunt generator
C. long shunt compound generator
D. any of’the above

A. voltage generated is less than the rated voltage
B. generated voltage is proportional to the load on the generator
C. voltage remains constant irrespective of the load
D. speed varies in proportion to the load on the generator

A. neutralise the commutating self induced e.m.f.
B. neutralise the armature reaction flux
C. neutralise both the armature reaction flux as well as commutating e.m.f. induced in the coil
D. perform none of the above functions

A. series generator
B. shunt generator
C. compound generator
D. self-excited generator