Transformers The flux in the core of a single phase transformer is _____ Purely alternating one None of the listed here Partly alternating and partly rotating Purely rotating one Purely alternating one None of the listed here Partly alternating and partly rotating Purely rotating one ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 100 per cent 50 per cent 25 per cent 98 per cent 100 per cent 50 per cent 25 per cent 98 per cent ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of primary turns to secondary turns secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage secondary current to primary current primary turns to secondary turns secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage secondary current to primary current ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 25% load Zero load 50% load 90% load 25% load Zero load 50% load 90% load ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High thermal conductivity Mechanical strength High permeability Low hysteresis loss High thermal conductivity Mechanical strength High permeability Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Current Voltage Frequency Power Current Voltage Frequency Power ANSWER DOWNLOAD EXAMIANS APP
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