Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that None of these its speed may be controlled more easily its power factor may be varied at will its speed is independent of supply frequency None of these its speed may be controlled more easily its power factor may be varied at will its speed is independent of supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because 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 rotor strengthens the rotating field causing more motor current The increased load has to take more 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 rotor strengthens the rotating field causing more motor current The increased load has to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Higher excitation only Both higher and low excitation None of the listed here Low excitation only Higher excitation only Both higher and low excitation None of the listed here Low excitation only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is cheaper than 3-phase induction motor for _____ High speed, low output Low speed, high output High speed, high output None of the listed here High speed, low output Low speed, high output High speed, high output None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 120° 90° 45° 60° 120° 90° 45° 60° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Variable frequency Variable supply frequency Windage friction Variable load Variable frequency Variable supply frequency Windage friction Variable load ANSWER DOWNLOAD EXAMIANS APP
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