Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is 3Fmax. (3/2)Fmax. Fmax. (1/2)Fmax. 3Fmax. (3/2)Fmax. Fmax. (1/2)Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Iron loss All of these Rotational loss Copper loss Iron loss All of these Rotational loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve reduced size. quick acceleration. low starting torque. high efficiency. reduced size. quick acceleration. low starting torque. high efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? None of these Turbo alternators. Aame in both alternators. Hydro alternators. None of these Turbo alternators. Aame in both alternators. Hydro alternators. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The DC compound motors are generally Differentical compound. Level Compound. Cummulative compound. None of these. Differentical compound. Level Compound. Cummulative compound. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) 1-S S 1/S 1/(1-S) 1-S S 1/S ANSWER DOWNLOAD EXAMIANS APP
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