Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 50 Hz 5 Hz 0 Hz 1 Hz 50 Hz 5 Hz 0 Hz 1 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave? Rotor winding. Both rotor and stator winding. Rotor mmf wave. Stator winding. Rotor winding. Both rotor and stator winding. Rotor mmf wave. Stator winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will decrease None of these either increase or decrease increase decrease None of these either increase or decrease increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its power factor will reduce its speed will reduce its speed will increase its efficiency will improve its power factor will reduce its speed will reduce its speed will increase its efficiency will improve ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Will results in open circuit. Fail to start. Nothing will happen. Will results in short circuit. Will results in open circuit. Fail to start. Nothing will happen. Will results in short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Kh is hysteresis constant, f is supply frequency, Bm maximum flux density in core of transformer, the expression of hysteresis loss in transformer, is given by KhfBm. KhfBm1.6. KhfBm3. Khf2Bm1.6. KhfBm. KhfBm1.6. KhfBm3. Khf2Bm1.6. ANSWER DOWNLOAD EXAMIANS APP
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