Electrical Machines In a DC generator the emf generated by the armature is maximum when shaft rotation is high. rate of change of flux is maximum. induced voltage is high. rate of change of flux is minimum. shaft rotation is high. rate of change of flux is maximum. induced voltage is high. rate of change of flux is minimum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Vacuum. Mica. Oil impregnated paper. Glass. Vacuum. Mica. Oil impregnated paper. Glass. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is zero. leading. unity. lagging. zero. leading. unity. lagging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz 1-phase induction motor is running at 1470 rpm. Find the forward and backward slips? 0.04, 1.96 0.02, 0.98 0.02, 1.98 0.04, 0.96 0.04, 1.96 0.02, 0.98 0.02, 1.98 0.04, 0.96 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? cross magnetization magnetization All of these demagnetization cross magnetization magnetization All of these demagnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is none. starting torque. maximum torque. electromagnetic torque. none. starting torque. maximum torque. electromagnetic torque. ANSWER DOWNLOAD EXAMIANS APP
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