Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 0.5 1.25 to 3.5 5 to 10 6 to 9 0.5 1.25 to 3.5 5 to 10 6 to 9 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Field excitation Supply frequency Mechanical load None of the listed here Field excitation Supply frequency Mechanical load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is more equal twice less more equal twice less ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 2 percent Zero 4 percent 10 percent 2 percent Zero 4 percent 10 percent ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Torque angle Synchronising angle Power factor angle Angle of retardation Torque angle Synchronising angle Power factor angle Angle of retardation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The percentage slip in case of a synchronous motor is 0.005 1 0.01 zero 0.005 1 0.01 zero ANSWER DOWNLOAD EXAMIANS APP
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