Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? Either short circuit or open circuit occurs. Fail to start. It will rotates in reverse direction. It will rotates in normal operation. Either short circuit or open circuit occurs. Fail to start. It will rotates in reverse direction. It will rotates in normal operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve voltage level. Improve current level. Improve power level. Improve power factor. Improve voltage level. Improve current level. Improve power level. Improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on stray losses. dielectric losses. core losses. copper losses. stray losses. dielectric losses. core losses. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be oscillating pulsating and unidirectional steady and unidirectional None of these oscillating pulsating and unidirectional steady and unidirectional None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for series motors. differential compound motors. separately excited motors. shunt motors. series motors. differential compound motors. separately excited motors. shunt motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be proportional to square of rotor speed. constant independent of speed. zero. proportional to rotor speed. proportional to square of rotor speed. constant independent of speed. zero. proportional to rotor speed. ANSWER DOWNLOAD EXAMIANS APP
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