Electrical Machines In which transformer, the tertiary winding is used? Delta - star Star - delta Star - star Delta - delta Delta - star Star - delta Star - star Delta - delta ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by increasing field current. any of above. reversing field electric current as well as direction of rotation. reversing the field current. increasing field current. any of above. reversing field electric current as well as direction of rotation. reversing the field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a induction motor helps to reduce the chance of cogging. reduce the chance of crawling. increase the starting torque. reduce the magnetizing current. reduce the chance of cogging. reduce the chance of crawling. increase the starting torque. reduce the magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cross magnetization effects which of the following? commutation both 2 and 3 reduction in main field flux reduces the terminal voltage commutation both 2 and 3 reduction in main field flux reduces the terminal voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 480 V. 350 V. 420 V. 400 V. 480 V. 350 V. 420 V. 400 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is 3Fmax. Fmax. (3/2)Fmax. (1/2)Fmax. 3Fmax. Fmax. (3/2)Fmax. (1/2)Fmax. ANSWER DOWNLOAD EXAMIANS APP
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