Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is Fmax. (1/2)Fmax. 3Fmax. (3/2)Fmax. Fmax. (1/2)Fmax. 3Fmax. (3/2)Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following windings are necessary in case of all dc machines? open type winding wave winding closed winding lap winding open type winding wave winding closed winding lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct ? None of these Both A and B. Compensating winding will act under the pole. Inter pole winding will act in interpolar region. None of these Both A and B. Compensating winding will act under the pole. Inter pole winding will act in interpolar region. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The starting resistance of DC motor is generally Infinitely large. Low. 1000 ohms. around 500 ohms. Infinitely large. Low. 1000 ohms. around 500 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Secondary winding of an auto transformer is also called compensating winding. damping winding. common winding. tertiary winding. compensating winding. damping winding. common winding. tertiary winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would remain the same increase decrease become zero remain the same increase decrease become zero ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS