Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 1.92 0.08 -0.08 -1.92 1.92 0.08 -0.08 -1.92 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Bl2v2. Bl2v. Blv. Blv2. Bl2v2. Bl2v. Blv. Blv2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running at rated speed without any additional resistance in series. If an additional resistance is placedin series, the speed of motor Remains unchanged. Decreases. Oscillates around the rated speed. Increases. Remains unchanged. Decreases. Oscillates around the rated speed. Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current None of above. Remains unchanged. Decreases. Increases. None of above. Remains unchanged. Decreases. Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slot edges in a DC machine are made of Mild steel. Silicon steel. Cast iron. Fibre. Mild steel. Silicon steel. Cast iron. Fibre. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 40% 10% 19% 5% 40% 10% 19% 5% ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS