Transformers What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? 8 kVA 4 kVA 0.25 kVA 16 kVA 8 kVA 4 kVA 0.25 kVA 16 kVA 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 Auto transformer Potential transformer Current transformer Power transformer Auto transformer Potential transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 900 350 210 450 900 350 210 450 ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Iron losses Friction losses Total losses Copper losses Iron losses Friction losses Total losses Copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Equal to Less than Higher than None of the listed here Equal to Less than Higher than None of the listed here 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 9.6 4 0.96 0.4 9.6 4 ANSWER DOWNLOAD EXAMIANS APP
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