1. . The types of faults that occur in electric motors are
(A) Stator
(B) Rotor
(C) Overload
(D) All of the above
2. . Which part of motor needs maximum attention for maintenance?
(A) Commutator
(B) Bearing
(C) Winding
(D) None of these
3. . Overheating in motor occurs due to ______
(A) Insufficient Cooling
(B) Change in Load
(C) Both a and b
(D) None of these
4. . Due to which fault in motor, winding becomes loose?
(A) Overheating
(B) Overload
(C) Vibration
(D) Misalignment
5. . Noise in the motor is produced due to
(A) Vibration
(B) Reverse Running
(C) Insufficient Power
(D) None
6. . ___________ can be used to protect insulation failure in a.c generators:
(A) Resistors
(B) Reactors
(C) Transformers
(D) All of these
7. . Interterm faults on an alternator are _________ and are ___________ detectable:
(A) Common, easily
(B) Uncommon, easily
(C) Uncommon, not easily
(D) Common, not easily
8. . Reactors are connected with system in
(A) Series
(B) Parallel
(C) Both a and b
(D) None of these
9. . The efficiency of generator depends on______
(A) Voltage
(B) Current
(C) Quality of Fuel
(D) None of these