Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is None of these great than one less than one approximately equal to one None of these great than one less than one approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine stray losses temperature all-day efficiency None of these stray losses temperature all-day efficiency None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a fitting on a transformer? Breather Commutator Buchholz's relay Conservator Breather Commutator Buchholz's relay Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased 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 withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns 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 None of these to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns to absorb the line surge voltage and save the winding of transformer from damage ANSWER DOWNLOAD EXAMIANS APP
Transformers What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? 0.25 kVA 16 kVA 4 kVA 8 kVA 0.25 kVA 16 kVA 4 kVA 8 kVA ANSWER DOWNLOAD EXAMIANS APP
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