Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor is clockwise when it is supplied with 3 - Φ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be B - C - A or C - A - B. A - C - B. B - C - A. C - A - B. B - C - A or C - A - B. A - C - B. B - C - A. C - A - B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to Ia Ia2 1/Ia I/Ia2 Ia Ia2 1/Ia I/Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on synchronous speed. core loss component. rotor speed. shaft torque. synchronous speed. core loss component. rotor speed. shaft torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 15) times the synchronous speed. 0.5 times the synchronous speed. 5 times the synchronous speed. (1 / 5) times the synchronous speed. (1 / 15) times the synchronous speed. 0.5 times the synchronous speed. 5 times the synchronous speed. (1 / 5) times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 45. 180. 270. 30. 45. 180. 270. 30. ANSWER DOWNLOAD EXAMIANS APP
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