Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Water cooled None of the listed here Oil cooled Air cooled Water cooled None of the listed here Oil cooled Air cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its None of the listed here Energy efficiency Power efficiency Current efficiency None of the listed here Energy efficiency Power efficiency Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High permeability Low hysteresis loss Mechanical strength High thermal conductivity High permeability Low hysteresis loss Mechanical strength High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 500 Hz 2kVA, 200 Hz 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 500 Hz 2kVA, 200 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to magnetostriction oil in the transformer mechanical vibrations load changes magnetostriction oil in the transformer mechanical vibrations load changes ANSWER DOWNLOAD EXAMIANS APP
Transformers In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues? 111.5 W 1,020 W 0 W 14.1 W 111.5 W 1,020 W 0 W 14.1 W ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS