Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased Reluctance of magnetic path is decreased Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 25 W 250 W 2.5 W 0 W 25 W 250 W 2.5 W 0 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in increased I2R losses All of the listed here increased core losses magnetic interference with communication circuits increased I2R losses All of the listed here increased core losses magnetic interference with communication circuits ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output iron loss is increased considerably secondary output is much less as compared to primary input voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output iron loss is increased considerably secondary output is much less as compared to primary input ANSWER DOWNLOAD EXAMIANS APP
Transformers In a power or distribution transformer about 10 per cent end turns are heavily insulated None of these 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 to absorb the line surge voltage and save the winding of 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 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 ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 500 kVA 3000 kVA 250 kVA 1000 kVA 500 kVA 3000 kVA 250 kVA 1000 kVA ANSWER DOWNLOAD EXAMIANS APP
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