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 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 ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Copper loss is equal to constant loss Leakage reactance of the two winding Resistance of the two winding are equal None of the listed here Copper loss is equal to constant loss Leakage reactance of the two winding Resistance of the two winding are equal None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 1000 kVA 500 kVA 250 kVA 3000 kVA 1000 kVA 500 kVA 250 kVA 3000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Increase copper losses Decreases copper losses Cause voltage drop in the windings None of the listed here Increase copper losses Decreases copper losses Cause voltage drop in the windings None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a power transformer should always be shorted open switched fused shorted open switched fused ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine temperature all-day efficiency None of these stray losses temperature all-day efficiency None of these stray losses ANSWER DOWNLOAD EXAMIANS APP
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