Transformers The secondary of a current transformer is always short-circuited under operating conditions because it is safe to human beings protects the primary circuit avoids core saturation and high voltage induction None of these is safe to human beings protects the primary circuit avoids core saturation and high voltage induction None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ Water cooled Oil cooled Natural air cooled None of the listed here Water cooled Oil cooled Natural air cooled None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. None of the listed here Greater than Smaller than About the same as None of the listed here Greater than Smaller than About the same as ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 78 Ω 7.8 Ω 13 Ω 1.3 Ω 78 Ω 7.8 Ω 13 Ω 1.3 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Reactive power Leakage reactance Apparent power None of the listed here Reactive power Leakage reactance Apparent power None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 50% load 25% load Zero load 90% load 50% load 25% load Zero load 90% load ANSWER DOWNLOAD EXAMIANS APP
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