Electrical Machines The power factor of an induction motor operating at no load will have a value around unity 0.9 lag 0.2 lag 0.2 lead unity 0.9 lag 0.2 lag 0.2 lead ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 3. 4. 7. 12. 3. 4. 7. 12. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In escalator which motor is used? DC shunt motor. 3 - φ IM. Universal motor. 1 - φ IM. DC shunt motor. 3 - φ IM. Universal motor. 1 - φ IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are both 1 and 2 reduce cross magnetization effect and improve commutation None of these nullify reactance voltage and improve the commutation. both 1 and 2 reduce cross magnetization effect and improve commutation None of these nullify reactance voltage and improve the commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using delta connection. zig - zag connection. star connection. V connection. delta connection. zig - zag connection. star connection. V connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is differentially compounded. shunt connected. separately excited. cumulatively compounded. differentially compounded. shunt connected. separately excited. cumulatively compounded. ANSWER DOWNLOAD EXAMIANS APP
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