Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 4 V 2 V 1 V 0 V 4 V 2 V 1 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC generator used for arc welding purpose is a cumulatively compounded generator differentially compounded generator series generator shunt generator cumulatively compounded generator differentially compounded generator series generator shunt generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/3 1/√5 1/√2 2/√5 1/3 1/√5 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is zero. leading. lagging. unity. zero. leading. lagging. unity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor, the damper winding is generally used to provide starting torque only. reduce the eddy currents. reduce noise level only. prevent hunting and provide the starting torque. provide starting torque only. reduce the eddy currents. reduce noise level only. prevent hunting and provide the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum possible speed at which an alternator can be driven to generate 50 Hz and 4000 V is 4000 rpm. 3000 rpm. 3600 rpm. 1500 rpm. 4000 rpm. 3000 rpm. 3600 rpm. 1500 rpm. ANSWER DOWNLOAD EXAMIANS APP
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