Electrical Machines The frame of an induction motor is made of silicon steel. aluminium. stainless steel. closed grained cast iron. silicon steel. aluminium. stainless steel. closed grained cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Iron loss Rotational loss Copper loss All of these Iron loss Rotational loss Copper loss All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 470 rpm. 240 rpm. 540 rpm. 450 rpm. 470 rpm. 240 rpm. 540 rpm. 450 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs either of these. decrease. None of these increase. either of these. decrease. None of these increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce friction and windage loss. hysteresis loss. eddy current loss. copper loss. friction and windage loss. hysteresis loss. eddy current loss. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Compound. None of them. Shunt. Series. Compound. None of them. Shunt. Series. ANSWER DOWNLOAD EXAMIANS APP
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