Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Higher than None of the listed here Less than Equal to Higher than None of the listed here Less than Equal to ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 73 V 7.3 V 88 V 880 V 73 V 7.3 V 88 V 880 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 20 V 2 V 18 V 180 V 20 V 2 V 18 V 180 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Breather Horn gaps Thermal overload relays Conservator Breather Horn gaps Thermal overload relays Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 0.96 0.4 4 9.6 0.96 0.4 4 9.6 ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 1:1 2:1 1:2 Can be any ratio 1:1 2:1 1:2 Can be any ratio ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS