Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0 V 0.85 V 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. Reduce core loss None of the listed here Increase the wight Provide tight magnetic coupling Reduce core loss None of the listed here Increase the wight Provide tight magnetic coupling 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 0 W 2.5 W 250 W 25 W 0 W 2.5 W 250 W ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine efficiency magnetising current magnetising current and loss core loss copper loss efficiency magnetising current magnetising current and loss core loss copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Breather Thermal overload relays Horn gaps Conservator Breather Thermal overload relays Horn gaps Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Gases Moisture Odour Sludge Gases Moisture Odour Sludge ANSWER DOWNLOAD EXAMIANS APP
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