Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by fixing the brush axis inline with the pole axis. shifting the brush axis from GNA to MNA. compensating winding and commutating poles. increasing field excitation. fixing the brush axis inline with the pole axis. shifting the brush axis from GNA to MNA. compensating winding and commutating poles. increasing field excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field current is reduced to zero the maximum power developed by alternator is 0.9103 KW. 1.644 KW. 5.46 KW. 2.73 KW. 0.9103 KW. 1.644 KW. 5.46 KW. 2.73 KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? unshaded, unshaded shaded, unshaded unshaded, shaded shaded, shaded unshaded, unshaded shaded, unshaded unshaded, shaded shaded, shaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be zero. proportional to rotor speed. constant independent of speed. proportional to square of rotor speed. zero. proportional to rotor speed. constant independent of speed. proportional to square of rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In normal dc machines operating at full-load conditions, the most powerful electromagnet is interpole and compensating windings together armature winding interpole winding field winding interpole and compensating windings together armature winding interpole winding field winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of leading and demagnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. demagnetization of leading & magnetization of trailing pole tip. magnetization of leading and demagnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. demagnetization of leading & magnetization of trailing pole tip. ANSWER DOWNLOAD EXAMIANS APP
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