Electrical Machines In a DC machine, the angle between the stator and rotor fields is 90o. 180o. dependent upon the load. 0o. 90o. 180o. dependent upon the load. 0o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The core flux in transformer depends mainly on supply voltage, frequency and load supply voltage and load supply voltage supply voltage and frequency supply voltage, frequency and load supply voltage and load supply voltage supply voltage and frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be severe sparking. rough commutator surface. imperfect contact. any of above. severe sparking. rough commutator surface. imperfect contact. any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical on it because otherwise it will Draw too much current. Open fuse or circuit breaker. Produce sparking at brushes. Develop excessive speed and damage itself. Draw too much current. Open fuse or circuit breaker. Produce sparking at brushes. Develop excessive speed and damage itself. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as air gap. cogging. crawling. relative speed. air gap. cogging. crawling. relative speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Split phase IM. Synchronous motors. Cage induction motor. Shaded pole IM. Split phase IM. Synchronous motors. Cage induction motor. Shaded pole IM. ANSWER DOWNLOAD EXAMIANS APP
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