Synchronous Motors A synchronous motor develop maximum power when load angle is 120° 90° 45° 60° 120° 90° 45° 60° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Interchange any two stator lines Change supply frequency Reduce dc field excitation to zero None of the listed here Interchange any two stator lines Change supply frequency Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Decrease None of the listed here Increase Remain unchanged Decrease None of the listed here Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Shorting of coils Eddy current flow Rise in winding temperature Increased core losses Shorting of coils Eddy current flow Rise in winding temperature Increased core losses ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Both higher and low excitation Higher excitation only Low excitation only None of the listed here Both higher and low excitation Higher excitation only Low excitation only None of the listed here 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