Transformers A tap changer is used on a transformer for Adjustment in primary voltage None of the listed here Adjustments in secondary voltage Adjustment in both primary and secondary Adjustment in primary voltage None of the listed here Adjustments in secondary voltage Adjustment in both primary and secondary ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability High silicon content All of the listed here Low hysteresis loss High permeability High silicon content All of the listed here Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 5.5 0.18 18 0.018 5.5 0.18 18 ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine magnetising current and loss efficiency of the transformer copper loss magnetising current magnetising current and loss efficiency of the transformer copper loss magnetising current ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 50 per cent 98 per cent 100 per cent 25 per cent 50 per cent 98 per cent 100 per cent 25 per cent ANSWER DOWNLOAD EXAMIANS APP
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