Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 800 V. 400 V. 200 V. 100 V. 800 V. 400 V. 200 V. 100 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The noise resulting from vibrations of lamination set by magnetic forces, is termed as magnetostriction. zoom. boo. hum. magnetostriction. zoom. boo. hum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is 4% 25% 2% 5% 4% 25% 2% 5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor may be unbalanced due to uneven air gap. overheating of winding. overload. poor lubrication. uneven air gap. overheating of winding. overload. poor lubrication. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of synchronous motor. capacitor start induction motor. repulsion start induction motor. transformer with secondary short circuited. synchronous motor. capacitor start induction motor. repulsion start induction motor. transformer with secondary short circuited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing divertor resistance of a DC series motor Decrease in speed but armature current remains the same. Increase in speed but armature currnet remains the same. Decrease in speed demanding less armature current. Increase in speed demanding more armature current. Decrease in speed but armature current remains the same. Increase in speed but armature currnet remains the same. Decrease in speed demanding less armature current. Increase in speed demanding more armature current. ANSWER DOWNLOAD EXAMIANS APP
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