Transformers A step up transformer increases Power Frequency Voltage Current Power Frequency Voltage Current ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Equal to None of the listed here Higher than Less than Equal to None of the listed here Higher than Less than ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is decreased, ______loss is decreased Eddy current Hysteresis Friction Copper Eddy current Hysteresis Friction Copper ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8? 880 V 8.8 V 8,800 V 88 V 880 V 8.8 V 8,800 V 88 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. None of the listed here Increase the wight Reduce core loss Provide tight magnetic coupling None of the listed here Increase the wight Reduce core loss Provide tight magnetic coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Current transformer Power transformer Potential transformer Auto transformer Current transformer Power transformer Potential transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
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