Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction generator a synchronous motor None of these an induction motor an induction generator a synchronous motor None of these an induction motor 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. 240 volt. 230 volt. 220 volt. 440 volt. 240 volt. 230 volt. 220 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? constant loss both A and B None of these variable loss constant loss both A and B None of these variable loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce copper loss. hysteresis loss. eddy electric current loss. vibrations. copper loss. hysteresis loss. eddy electric current loss. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed depends on voltage load angle both 1and 2 reactance voltage load angle both 1and 2 reactance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Operating speed. Starting torque. Starting torque, operating speed, full load current. Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. Full load current. ANSWER DOWNLOAD EXAMIANS APP
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