Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Voltage transformer Current transformer Auto transformer Power transformer Voltage transformer Current transformer Auto transformer Power transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The leakage flux in a transformer depends upon load current, voltage, frequency and power factor load current, voltage and frequency load current load current and voltage load current, voltage, frequency and power factor load current, voltage and frequency load current load current and voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current and loss copper loss efficiency magnetising current core loss magnetising current and loss copper loss efficiency magnetising current core loss 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 20 A 5 A 10 A 15 A 20 A 5 A 10 A ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Power Frequency Voltage Current Power Frequency Voltage Current ANSWER DOWNLOAD EXAMIANS APP
Transformers A tap changer is used on a transformer for None of the listed here Adjustment in primary voltage Adjustments in secondary voltage Adjustment in both primary and secondary None of the listed here Adjustment in primary voltage Adjustments in secondary voltage Adjustment in both primary and secondary ANSWER DOWNLOAD EXAMIANS APP
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