Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 0 V 1 V 4 V 2 V 0 V 1 V 4 V 2 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? Star-delta starter. All of these. DOL starter. Auto transformer starter. Star-delta starter. All of these. DOL starter. Auto transformer starter. 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 2, 3, 4 1, 3, 5 1, 2, 5 1, 2, 3, 4 2, 3, 4 1, 3, 5 1, 2, 5 1, 2, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At stand still condition the value of slip is 1 finite value 0 infinite value 1 finite value 0 infinite value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the iron loss increase the maintenance and repair All of these increases the design cost increase the iron loss increase the maintenance and repair All of these increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Secondary winding of an auto transformer is also called damping winding. tertiary winding. common winding. compensating winding. damping winding. tertiary winding. common winding. compensating winding. ANSWER DOWNLOAD EXAMIANS APP
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