Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of more than 15 A None of these 15 A less than 15 A more than 15 A None of these 15 A less than 15 A 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 to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns None of these to absorb the line surge voltage and save the winding of transformer from damage to reflect the line surge and save the winding of a 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 absorb the line surge voltage and save the winding of transformer from damage ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Iron losses Copper losses Leakage reactance Winding resistance Iron losses Copper losses Leakage reactance Winding resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers By laminating the core of a transformer, we decrease _____ Leakage reactance Copper loss Eddy current loss Hysteresis loss Leakage reactance Copper loss Eddy current loss Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Primary reactance is too much increased Permeability of core is increased None of the listed here Magnetising current is abnormally high Primary reactance is too much increased Permeability of core is increased None of the listed here Magnetising current is abnormally high ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Core losses will be excessive Primary will draw large power Primary reactance is too much increased None of the listed here Core losses will be excessive Primary will draw large power Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
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