Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Iron losses Leakage reactance Copper loss Eddy current loss Iron losses Leakage reactance Copper loss Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Copper losses are negligible Eddy losses are totally eliminated Saving in winding material Hysteresis losses are reduced Copper losses are negligible Eddy losses are totally eliminated Saving in winding material Hysteresis losses are reduced ANSWER DOWNLOAD EXAMIANS APP
Transformers In a power or distribution transformer about 10 per cent end turns are heavily insulated 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 None of these to reflect the line surge and save the winding of a transformer from damage 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 None of these to reflect the line surge and save the winding of a transformer from damage ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ None of the listed here High voltage winding Either low or high voltage winding Low voltage winding None of the listed here High voltage winding Either low or high voltage winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because A static device Uses electric coupling Uses capacitive coupling Uses inductive coupling A static device Uses electric coupling Uses capacitive coupling Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
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