Electrical Machines In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses? 1.5KW 0.5Kw 2KW 3KW 1.5KW 0.5Kw 2KW 3KW ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where Very fine speed control over the whole range from zero to normal speed is required. All of above. The accuracy in speed control is required. The speed in both the direction is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. The accuracy in speed control is required. The speed in both the direction is required. 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) 1000 W, 5040 W. 3190 W, 5040 W. 100 W, 2000 W. 6000 W, 7000 W. 1000 W, 5040 W. 3190 W, 5040 W. 100 W, 2000 W. 6000 W, 7000 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 < I2 I1 > I2 None of these I1 = I2 I1 < I2 I1 > I2 None of these I1 = I2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased power angle decrease and power factor increase power angle increase and power factor decrease both power angle and power factor decrease both power angle and power factor increase power angle decrease and power factor increase power angle increase and power factor decrease both power angle and power factor decrease both power angle and power factor increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will not run. continue running in the same direction as before. run in a direction opposite to previous one. get damaged. not run. continue running in the same direction as before. run in a direction opposite to previous one. get damaged. ANSWER DOWNLOAD EXAMIANS APP
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