Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current Decreases. Remains unchanged. None of above. Increases. Decreases. Remains unchanged. None of above. Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the motor will attain dangerously high speed motor will become slow. armature current will drop armature will oscillate about original speed as the mean speed motor will attain dangerously high speed motor will become slow. armature current will drop armature will oscillate about original speed as the mean speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A simple method of increasing the voltage of a DC generator is to increase the number of turns in field coil. increase the number of turns in armature coil. increase the source frequency. increase the speed of shaft rotation. increase the number of turns in field coil. increase the number of turns in armature coil. increase the source frequency. increase the speed of shaft rotation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of synchronous motor. transformer with secondary short circuited. capacitor start induction motor. repulsion start induction motor. synchronous motor. transformer with secondary short circuited. capacitor start induction motor. repulsion start induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. inversely. has no relation. directly. none of these. inversely. has no relation. directly. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 2.7 mWb. 1.4 mWb. 1.2 mWb. 3.5 mWb. 2.7 mWb. 1.4 mWb. 1.2 mWb. 3.5 mWb. ANSWER DOWNLOAD EXAMIANS APP
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