Single Phase Motors A 50 Hz, 4- pole single phase induction motor will have a synchronous speed of ______ None of the listed here 1200 rpm 1500 rpm 750 rpm None of the listed here 1200 rpm 1500 rpm 750 rpm ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors A capacitor-start single phase induction motor is switched on to supply with its capa-citor replaced by an inductor of equivalent reactance value. It will not start at all start and run at rated speed start and run slowly start and then stop not start at all start and run at rated speed start and run slowly start and then stop ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors The full load efficiency of a shaded pole motor is about _______ 5 to 10% 30 to 35% 60 to 70% 70 to 80% 5 to 10% 30 to 35% 60 to 70% 70 to 80% ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Hysteresis motor is particularly useful for high-quality record players and tape-recorders because it is not subject to any magnetic or mechanical vibrations it revolves synchronously it develops hysteresis torque which is extremely steady both in amplitude and phase it can be easily manufactured in extremely small sizes of up to 1 W output it is not subject to any magnetic or mechanical vibrations it revolves synchronously it develops hysteresis torque which is extremely steady both in amplitude and phase it can be easily manufactured in extremely small sizes of up to 1 W output ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors The capacitor start, capacitor run motor has _______ Low power factor No centrifugal switch Noisy operation Low efficiency Low power factor No centrifugal switch Noisy operation Low efficiency ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors If the capacitor of a single-phase motor is short-circuited the motor will run in the same direction at reduced r.p.m. the motor will run the motor will run in reverse direction the motor will not start the motor will run in the same direction at reduced r.p.m. the motor will run the motor will run in reverse direction the motor will not start ANSWER DOWNLOAD EXAMIANS APP
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