Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The increased load has to take more current The rotor strengthens the rotating field causing more motor current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current The rotor strengthens the rotating field causing more motor current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be None of these more than the supply voltage less than the supply voltage equal to the supply voltage None of these more than the supply voltage less than the supply voltage equal to the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ None of the listed here More than rated rotor current Less than rated horsepower output More than rated horseppwer output None of the listed here More than rated rotor current Less than rated horsepower output More than rated horseppwer output 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 pull-up torque pull-in torque None of these pull-out torque pull-up torque pull-in torque None of these pull-out torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be started by Provinding damper winding All of the listed here Dc compound motor Pony motor Provinding damper winding All of the listed here Dc compound motor Pony motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always Zero Positive 1% 0.5% Zero Positive 1% 0.5% ANSWER DOWNLOAD EXAMIANS APP
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