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 The speed of a DC series motor is Proportional to field current. Inversely proportional to the armature current. Proportional to the armature current. Proportional to the square of the armature current. Proportional to field current. Inversely proportional to the armature current. Proportional to the armature current. Proportional to the square of the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve power factor. Improve voltage level. Improve power level. Improve current level. Improve power factor. Improve voltage level. Improve power level. Improve current level. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor, the starting torque developed is proportional to 1/V² 1/V supply voltage V V² 1/V² 1/V supply voltage V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For same HP rating and full load speed which of following motor has poor starting torque? Shunt. Series. Cummulative compound. Differently compounded. Shunt. Series. Cummulative compound. Differently compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has the highest starting torque? Slip ring induction motor. None of these Same in both induction motors. Squirrel cage induction motor. Slip ring induction motor. None of these Same in both induction motors. Squirrel cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
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