Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it runs at a very high speed it continues to run at the same speed the motor stops it runs at a slower speed it runs at a very high speed it continues to run at the same speed the motor stops it runs at a slower speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with large air gap has a small value of inherent regulation all of the listed here a higher value of stability limit a higher synchronizing power which makes the machine less sensitive to load variations a small value of inherent regulation all of the listed here a higher value of stability limit a higher synchronizing power which makes the machine less sensitive to load variations ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at zero power factor leading unity power factor 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 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An under excited synchronous motor behaves as_______ An inductor A capacitor A resistor None of the listed here An inductor A capacitor A resistor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ Over-excited Under-excited All of these Normally excited Over-excited Under-excited All of these Normally excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ None of the listed here 50 cycles/second 25 cycles/ second 100 cycles/second None of the listed here 50 cycles/second 25 cycles/ second 100 cycles/second ANSWER DOWNLOAD EXAMIANS APP
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