Electrical Machines The power factor of an induction motor operating at no load will have a value around unity 0.2 lag 0.2 lead 0.9 lag unity 0.2 lag 0.2 lead 0.9 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC motor generally used for shears and punches is Shunt motor. Cummulative compound motor. Series motor. Differential compound motor. Shunt motor. Cummulative compound motor. Series motor. Differential compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on core loss component. rotor speed. synchronous speed. shaft torque. core loss component. rotor speed. synchronous speed. shaft torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct ? None of these Both A and B. Inter pole winding will act in interpolar region. Compensating winding will act under the pole. None of these Both A and B. Inter pole winding will act in interpolar region. Compensating winding will act under the pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When applied rated voltage per phase is reduce to one half, the starting torque of three phase squirrel cage induction motor becomes twice the initial value 1/4 of the intial value 1/2 of the initial value 4 time the initial value twice the initial value 1/4 of the intial value 1/2 of the initial value 4 time the initial value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. kept constant to certain value. remains unchanged. decreased. increased. kept constant to certain value. remains unchanged. decreased. increased. ANSWER DOWNLOAD EXAMIANS APP
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