Electrical Machines Slip exists in in both machines. induction motor. none of above. synchronous motor. in both machines. induction motor. none of above. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne test is conducted under which of the following condition? full load any of the above half load no load full load any of the above half load no load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz 1-phase induction motor is running at 1470 rpm. Find the forward and backward slips? 0.02, 1.98 0.04, 0.96 0.04, 1.96 0.02, 0.98 0.02, 1.98 0.04, 0.96 0.04, 1.96 0.02, 0.98 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. to counteract the reactance voltage and the cross-magnetizi both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. to counteract the reactance voltage and the cross-magnetizi ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 88.8%. 57.1%. 48.0%. 59.2%. 88.8%. 57.1%. 48.0%. 59.2%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? Either short circuit or open circuit occurs. Fail to start. It will rotates in normal operation. It will rotates in reverse direction. Either short circuit or open circuit occurs. Fail to start. It will rotates in normal operation. It will rotates in reverse direction. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS