Electrical Machines With the increases in field excitation of a DC generator, its generated emf remains constant. decreases. increases. increases upto a limit and then remains almost constant. remains constant. decreases. increases. increases upto a limit and then remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate no voltage. maximum power. maximum voltage. maximum current. no voltage. maximum power. maximum voltage. maximum current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss? 1960 Watt. 1800 Watt. 1920 Watt. 980 Watt. 1960 Watt. 1800 Watt. 1920 Watt. 980 Watt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase cost of operation. power factor. starting torque. breaking torque. cost of operation. power factor. starting torque. breaking torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Type of single phase motor having highest power factor at full load is split phase. capacitor run. capacitor start. shaded pole type. split phase. capacitor run. capacitor start. shaded pole type. ANSWER DOWNLOAD EXAMIANS APP
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