Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ All of these Under-excited Normally excited Over-excited All of these Under-excited Normally excited Over-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 0° electrical 45° electrical 90° electrical 30° electrical 0° electrical 45° electrical 90° electrical 30° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The construction of a synchronous motor resembles a series motor an induction motor a rotary converter an alternator a series motor an induction motor a rotary converter an alternator ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One minute One second One hour None of the listed here One minute One second One hour None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, None of the listed here Polarity of rotor poles Supply phase sequence Current to field winding None of the listed here Polarity of rotor poles Supply phase sequence Current to field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then the stator current will be zero the stator current will be very small the back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be zero the stator current will be very small the back e.m.f. will be more than the supply voltage the stator current will be very high ANSWER DOWNLOAD EXAMIANS APP
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