Synchronous Motors In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then the torque generated is maximum the excitation is said to be zero per cent the excitation is said to be hundred per cent the motor is said to be fully loaded the torque generated is maximum the excitation is said to be zero per cent the excitation is said to be hundred per cent the motor is said to be fully loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about None of the listed here One minute One hour One second None of the listed here One minute One hour One second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its power factor may be varied at will None of these its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will None of these its speed is independent of supply frequency its speed may be controlled more easily ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at 0.707 power factor leading 0.707 power factor lagging zero power factor leading unity power factor 0.707 power factor leading 0.707 power factor lagging zero power factor leading unity power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A three phase synchronous motor will have Two slip rings Three slip rings No slip rings One slip rings Two slip rings Three slip rings No slip rings One slip rings ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Mostly, synchronous motors are of Induction type machines Salient pole type machines Smooth cylindrical type machines Alternator type machines Induction type machines Salient pole type machines Smooth cylindrical type machines Alternator type machines ANSWER DOWNLOAD EXAMIANS APP
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