Electric Machines Mega Quiz 19

(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) negligibly low

(b) equal to no-load terminal voltage

(c) more than no-load terminal voltage

(d) less than no-load terminal voltage

(a) armature reaction

(b) armature resistance drop

(c) field weakening due to armature reaction and armature

(d) commutation

(a) external resistance = internal characteristic - armature reaction

(b) internal characteristic = magnetisation characteristic - ohmic drop

(c) external characteristic = magnetisation characteristic - ohmic drop - armature reaction

(d) magnetisation characteristic = external characteristic

(a) will be zero

(b) will be of 5 Hz

(c) will be of 50 Hz

(d) none