Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 5 %. 2.67 %. 30 %. 1.5 %. 5 %. 2.67 %. 30 %. 1.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, 1. reactance voltage is proportional to armature current 2.reactance voltage is proportional to core length 3.reactance voltage is due to self-flux of the coil undergoing commutation 4. armature-cross flux is neutralized by interpolar flux 5. interpolarmmf is more than armature mmf in the interpolar zone From these, the correct answer is 1, 2, 3, 4 2, 3, 4 1, 3, 5 1, 2, 5 1, 2, 3, 4 2, 3, 4 1, 3, 5 1, 2, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above question, find rms line voltage for delta connection? 100 V. 50 V. 230.2 V. 399 V. 100 V. 50 V. 230.2 V. 399 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of transformer core is made of wrought iron. cast steel. cast iron. silicon steel. wrought iron. cast steel. cast iron. silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of aluminium. mild steel. cast iron. stainless steel. aluminium. mild steel. cast iron. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking at the middle of the brush. sparking the trailing edge of the brush. sparking at the leading edge of the brush. no sparking. sparking at the middle of the brush. sparking the trailing edge of the brush. sparking at the leading edge of the brush. no sparking. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS