Electrical Machines In DC motors, under trailing pole tips, flux density will_______ ? increase None of these either increase or decrease decrease increase None of these either increase or decrease decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following windings are necessary in case of all dc machines? closed winding open type winding wave winding lap winding closed winding open type winding wave winding lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? Poly-phase synchronous machine. None of these. Single phase induction motor. Poly-phase induction motor. Poly-phase synchronous machine. None of these. Single phase induction motor. Poly-phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The mmf produced by rotor currents of a 3 - Φ induction motor rotates at the speed of rotor in the air gap. is at standstill with respect to stator mmf. rotates at slip speed with respect to stator mmf. rotates at synchronous speed with respect to rotor. rotates at the speed of rotor in the air gap. is at standstill with respect to stator mmf. rotates at slip speed with respect to stator mmf. rotates at synchronous speed with respect to rotor. 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. 220 volt. 230 volt. 240 volt. 440 volt. 220 volt. 230 volt. 240 volt. 440 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above questions, find the power delivered by each of the alternators to a load of impedance 6Ω(resistive) 100 W, 2000 W. 3190 W, 5040 W. 6000 W, 7000 W. 1000 W, 5040 W. 100 W, 2000 W. 3190 W, 5040 W. 6000 W, 7000 W. 1000 W, 5040 W. ANSWER DOWNLOAD EXAMIANS APP
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