Electrical Machines A DC generator beyond critical resistance will generate maximum power. maximum voltage. maximum current. no voltage. maximum power. maximum voltage. maximum current. no voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because field resistance was higher than critical resistance there was no residual magnetism in the field circuit field winding was wrongly connected there was a break in the armature circuit field resistance was higher than critical resistance there was no residual magnetism in the field circuit field winding was wrongly connected there was a break in the armature circuit ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is 0.25. near to 1. Greater than 1. 0.5. 0.25. near to 1. Greater than 1. 0.5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in dc motor results short circuit. open circuit. increase in speed. decrease in speed. short circuit. open circuit. increase in speed. decrease in speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is DC. DC of slip frequency. A modulated supply frequency AC voltage with slip frequency envelop. AC of supply frequency. DC. DC of slip frequency. A modulated supply frequency AC voltage with slip frequency envelop. AC of supply frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The use of higher flux density in the transformer design None of these reduces the weigh per KVA has no relation with the weight of transformer increases the weigh per KVA None of these reduces the weigh per KVA has no relation with the weight of transformer increases the weigh per KVA ANSWER DOWNLOAD EXAMIANS APP
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