Electrical Machines No load primary current in a transformer lags behind applied voltage by exactly 90Â&am leads the applied voltage by exactly 90Â& lags behind applied voltage somewhat less than 90à leads the applied voltage somewhat less than 90Ã& lags behind applied voltage by exactly 90Â&am leads the applied voltage by exactly 90Â& lags behind applied voltage somewhat less than 90à leads the applied voltage somewhat less than 90Ã& ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is None of these AC. both of above. DC. None of these AC. both of above. DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A frog leg winding is used in a DC machine to eliminate the use drum winding. the use equalizer in lap winding. reactance voltage produced due to communication. the use of compensating winding. the use drum winding. the use equalizer in lap winding. reactance voltage produced due to communication. the use of compensating winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors. Calculate the back emf produced when it is running at a speed of 1500 rpm. 440 volt. 230 volt. 240 volt. 220 volt. 440 volt. 230 volt. 240 volt. 220 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the outer cage offers high resistance and high reactance. low resistance and high reactance. low resistance and low reactance. high resistance and low reactance. high resistance and high reactance. low resistance and high reactance. low resistance and low reactance. high resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply harmonics developed in the motor improper design of stator laminations high loads low voltage supply harmonics developed in the motor improper design of stator laminations high loads ANSWER DOWNLOAD EXAMIANS APP
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