Synchronous Motors For power factor correction, synchronous motors operate at normal load with zero excitation normal load with minimum excitation no-load and greatly over-excited fields no-load and under-excited fields normal load with zero excitation normal load with minimum excitation no-load and greatly over-excited fields no-load and under-excited fields ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as None of these pull-up torque pull-in torque pull-out torque None of these pull-up torque pull-in torque pull-out torque ANSWER DOWNLOAD EXAMIANS APP
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 runs at a slower speed the motor stops it continues to run at the same speed it runs at a very high speed it runs at a slower speed the motor stops it continues to run at the same speed 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 Normally excited All of these Over-excited Under-excited Normally excited All of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at speed ranging from ______ None of the listed here 3600 to 6000 rpm 1800 to 3600 rpm 150 to 1800 rpm None of the listed here 3600 to 6000 rpm 1800 to 3600 rpm 150 to 1800 rpm ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Higher excitation only None of the listed here Low excitation only Both higher and low excitation Higher excitation only None of the listed here Low excitation only Both higher and low excitation ANSWER DOWNLOAD EXAMIANS APP
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