Electrical Machines No load test of 3-phase induction motor gives which of the following? variable loss both A and B None of these constant loss variable loss both A and B None of these constant loss 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. 350 V. 480 V. 420 V. 400 V. 350 V. 480 V. 420 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? shaded, shaded unshaded, unshaded unshaded, shaded shaded, unshaded shaded, shaded unshaded, unshaded unshaded, shaded shaded, unshaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Eight times. Remains same. Doubled. Four times. Eight times. Remains same. Doubled. Four times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 100 Hz 25 Hz 50 Hz 0 Hz 100 Hz 25 Hz 50 Hz 0 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 230 V. 150 V. 240 V. 210 V 230 V. 150 V. 240 V. 210 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS