Transformers The temperature rise of transformer is directly proportional to _______ None of the listed here Leakage reactance Reactive power Apparent power None of the listed here Leakage reactance Reactive power Apparent power ANSWER DOWNLOAD EXAMIANS APP
Transformers In a power or distribution transformer about 10 per cent end turns are heavily insulated to reflect the line surge and save the winding of a transformer from damage None of these to absorb the line surge voltage and save the winding of transformer from damage to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns to reflect the line surge and save the winding of a transformer from damage None of these to absorb the line surge voltage and save the winding of transformer from damage to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of cooling a power transformer is natural air cooling oil cooling Any of these air blast cooling natural air cooling oil cooling Any of these air blast cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High permeability Mechanical strength High thermal conductivity Low hysteresis loss High permeability Mechanical strength High thermal conductivity Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 13 Ω 78 Ω 7.8 Ω 1.3 Ω 13 Ω 78 Ω 7.8 Ω 1.3 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. None of the listed here Smaller than About the same as Greater than None of the listed here Smaller than About the same as Greater than ANSWER DOWNLOAD EXAMIANS APP
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