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 15 A less than 15 A None of these more than 15 A 15 A less than 15 A None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as zoom buzz ringing hum zoom buzz ringing hum ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 15 A 5 A 20 A 10 A 15 A 5 A 20 A 10 A ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Only magnetically Magnetically as well as electrically None of the listed here Only electrically Only magnetically Magnetically as well as electrically None of the listed here Only electrically ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same kVA rating same efficiency same polarity same number of turns on the secondary side. same kVA rating same efficiency same polarity same number of turns on the secondary side. 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
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