Electrical Machines In a three phase slip-ring induction motor, brushes are connected to 3 - Φ AC supply. DC supply. equalizing coils. external star-connected resistors. 3 - Φ AC supply. DC supply. equalizing coils. external star-connected resistors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their turn- ratios are exactly equal percentage impedances are equal polarities are properly connected KVA ratings are equal turn- ratios are exactly equal percentage impedances are equal polarities are properly connected KVA ratings are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motor have which of the following application? Food mixer. Traction. Domestic pump. Lift. Food mixer. Traction. Domestic pump. Lift. 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 480 V. 400 V. 350 V. 420 V. 480 V. 400 V. 350 V. 420 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 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 both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase ANSWER DOWNLOAD EXAMIANS APP
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