Electrical Machines In a transformer zero voltage regulation is achieved at a load power factor which is lagging leading zero unity lagging leading zero unity ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 3. 7. 4. 12. 3. 7. 4. 12. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used for better cooling of transformer. None of these to take up the expansion of oil due to temperature rise. to act as an oil storage. for better cooling of transformer. None of these to take up the expansion of oil due to temperature rise. to act as an oil storage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of aluminium. stainless steel. mild steel. cast iron. aluminium. stainless steel. mild steel. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in dc motor results short circuit. open circuit. increase in speed. decrease in speed. short circuit. open circuit. increase in speed. decrease in speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? None of these variable loss constant loss both A and B None of these variable loss constant loss both A and B ANSWER DOWNLOAD EXAMIANS APP
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