Electrical Machines With the increase in speed of DC motor Back emf falls and line current increase. Both back emf as well as line current fall. Both back emf as well as line current increase. Back emf increase but line current falls. Back emf falls and line current increase. Both back emf as well as line current fall. Both back emf as well as line current increase. Back emf increase but line current falls. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc shunt with armature resistance control. dc series motor. dc shunt motor with field weakening. dc compound motor. dc shunt with armature resistance control. dc series motor. dc shunt motor with field weakening. dc compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 400 V. 420 V. 480 V. 350 V. 400 V. 420 V. 480 V. 350 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 40 HZ 50 Hz 60 Hz 25 Hz 40 HZ 50 Hz 60 Hz 25 Hz 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 A - C - B. C - A - B. B - C - A or C - A - B. B - C - A. A - C - B. C - A - B. B - C - A or C - A - B. B - C - A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is employed in DC machine of high current and low voltage rating. low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. high current and low voltage rating. low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
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