Electrical Machines Armature of DC machine is made of non-ferrous material. silicon steel. insulating material. conducting material. non-ferrous material. silicon steel. insulating material. conducting material. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then the machine will share load equally. the machine with more drooping characteristic will supply more load. the machine with more drooping characteristic will supply less load. None of these the machine will share load equally. the machine with more drooping characteristic will supply more load. the machine with more drooping characteristic will supply less load. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Compound (cummolative). Shunt. Series. none of these. Compound (cummolative). Shunt. Series. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frame of an induction motor is made of closed grained cast iron. aluminium. stainless steel. silicon steel. closed grained cast iron. aluminium. stainless steel. silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 2400 A. 1200 A. 3600 A. 600 A. 2400 A. 1200 A. 3600 A. 600 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, 1. reactance voltage is proportional to armature current 2.reactance voltage is proportional to core length 3.reactance voltage is due to self-flux of the coil undergoing commutation 4. armature-cross flux is neutralized by interpolar flux 5. interpolarmmf is more than armature mmf in the interpolar zone From these, the correct answer is 1, 2, 3, 4 1, 2, 5 1, 3, 5 2, 3, 4 1, 2, 3, 4 1, 2, 5 1, 3, 5 2, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
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