Synchronous Motors A synchronous motor will always stop when Supply voltage fluctuates Supply voltage frequency changes Load in motor varies Excitation winding gets disconnected Supply voltage fluctuates Supply voltage frequency changes Load in motor varies Excitation winding gets disconnected ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is cheaper than 3-phase induction motor for _____ Low speed, high output None of the listed here High speed, high output High speed, low output Low speed, high output None of the listed here High speed, high output High speed, low output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be lagging leading unity zero lagging leading unity zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. None of the listed here Decrease Remain unchanged Increase None of the listed here Decrease Remain unchanged Increase ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ All of these Normally excited Over-excited Under-excited All of these Normally excited Over-excited Under-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One hour None of the listed here One minute One second One hour None of the listed here One minute One second ANSWER DOWNLOAD EXAMIANS APP
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