Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 700 W 625 W 650 W 600 W 700 W 625 W 650 W 600 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 540 rpm. 470 rpm. 450 rpm. 240 rpm. 540 rpm. 470 rpm. 450 rpm. 240 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following generators are used in arc welding? differential compound generators cumulative compound generators shunt generators series generators differential compound generators cumulative compound generators shunt generators series generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? Both option B and C. None of the options. Armature flux weakens the main field flux. Armature flux distorts the main field flux. Both option B and C. None of the options. Armature flux weakens the main field flux. Armature flux distorts the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shapers and slotters which motor are preferred? Synchronous motor. Double cage motor. Squirrel cage IM. Slip ring IM. Synchronous motor. Double cage motor. Squirrel cage IM. Slip ring IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their turn- ratios are exactly equal polarities are properly connected KVA ratings are equal percentage impedances are equal turn- ratios are exactly equal polarities are properly connected KVA ratings are equal percentage impedances are equal ANSWER DOWNLOAD EXAMIANS APP
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