Electrical Machines A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will remain unaltered. decrease. become execessively high. increase. remain unaltered. decrease. become execessively high. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 200 V 230 V 115 V 460 V 200 V 230 V 115 V 460 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For same HP rating and full load speed which of following motor has poor starting torque? Cummulative compound. Series. Differently compounded. Shunt. Cummulative compound. Series. Differently compounded. Shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V dc series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 Ω. The value of resistance which must be added to obtain rated torque at 1000 rpm is 2.2 Ω 6 Ω 1.9 Ω 5.7 Ω 2.2 Ω 6 Ω 1.9 Ω 5.7 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V curve of synchronous motor shows variation of supply voltage and field current at constant excitation. power factor and DC excitation at constant load. power factor and supply voltage during hunting. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. power factor and supply voltage during hunting. supply voltage and excitation current at constant load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor requires 3 point starter? Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. Series motor. Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. Series motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS