- (A) Field copper loss
- (B) Windage loss
- (C) Armature copper loss
- (D) None of the above
Electrical Engineering Mcqs
- (A) hysteresis loss
- (B) field copper loss
- (C) armature copper loss
- (D) eddy current loss
- (A) Loss of efficiency
- (B) Excessive heating of core
- (C) Increase in terminal voltage
- (D) Rise in temperature of ventilating air
- (A) Frequency of magnetic reversals
- (B) Maximum value of flux density
- (C) Volume and grade of iron
- (D) Rate of flow of ventilating air
- (A) back e.m.f. is less than the applied voltage
- (B) back e.m.f. is equal to the applied voltage
- (C) back e.m.f. of rotor is more than the applied voltage
- (D) none of the above
- (A) high initial cost
- (B) high maintenance cost
- (C) low efficiency at Hght loads
- (D) all of the above
- (A) residual magnetism of the generator
- (B) core losses of motor
- (C) mechanical losses of motor and generator together
- (D) all of the above
- (A) Swinburne’s test
- (B) Hopkinson’s test
- (C) Field test
- (D) Brake test
- (A) stray losses
- (B) eddy current losses
- (C) field copper losses
- (D) windage losses
- (A) iron losses
- (B) line losses
- (C) sparking
- (D) corona losses
