Electrical Machines The heat transfer by convection in a transformer least depends on temperature difference. surface area. air velocity. color of the paint. temperature difference. surface area. air velocity. color of the paint. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are all of above. high initial cost. poor overall efficiency. high maintenance cost. all of above. high initial cost. poor overall efficiency. high maintenance cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as It runs at very high speed at light load. It is cheaper in cost. It develops high starting torque. It consume less power. It runs at very high speed at light load. It is cheaper in cost. It develops high starting torque. It consume less power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 150 V. 200 V. 223.V. 300 V. 150 V. 200 V. 223.V. 300 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Star - delta method of starting of motor is not possible in case of single phase induction motor. high speed motor. high torque motor. low horse power motor. single phase induction motor. high speed motor. high torque motor. low horse power motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shunt generator has a critical field resistance of 300 Ω at a speed of 800 rpm if the speed is raised to 1000 rpm the critical field resistance is 225 Ω. 375 Ω. 150 Ω. 145 Ω. 225 Ω. 375 Ω. 150 Ω. 145 Ω. ANSWER DOWNLOAD EXAMIANS APP
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