Transformers A transformer is an efficient device because Uses electric coupling Uses capacitive coupling Uses inductive coupling A static device Uses electric coupling Uses capacitive coupling Uses inductive coupling A static device ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 μH 4 μH 8 μH 2 mH 2 μH 4 μH 8 μH 2 mH ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Voltage transformer Power transformer Current transformer Auto transformer Voltage transformer Power transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ None of the listed here Oil cooled Natural air cooled Water cooled None of the listed here Oil cooled Natural air cooled Water cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Potential transformer Current transformer Power transformer Auto transformer Potential transformer Current transformer Power transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Winding resistance Iron losses Copper losses Leakage reactance Winding resistance Iron losses Copper losses Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
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