Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 5 to 10 0.5 6 to 9 1.25 to 3.5 5 to 10 0.5 6 to 9 1.25 to 3.5 ANSWER DOWNLOAD EXAMIANS APP
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 rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The increased load has to take more current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor with large air gap has A higher synchronizing power which makes the machine less sensitive to load variations All of the listed here A small value of inherent regulation A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations All of the listed here A small value of inherent regulation A higher value of stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor decreases with the increase in Speed Horse power rating Flux density All of the listed here Speed Horse power rating Flux density All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ 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 None of the listed here More than rated rotor current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor is determined by its _____ kVA rating None of the listed here kW rating kVAR rating kVA rating None of the listed here kW rating kVAR rating ANSWER DOWNLOAD EXAMIANS APP
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