Transformers The open circuit test on a transformer gives _______ Copper losses Friction losses Total losses Iron losses Copper losses Friction losses Total losses Iron losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it avoids core saturation and high voltage induction protects the primary circuit None of these is safe to human beings avoids core saturation and high voltage induction protects the primary circuit None of these is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ Inversely proportional to supply frequency Inversely proportional to primary voltage Directly proportional to supply frequency None of the listed here Inversely proportional to supply frequency Inversely proportional to primary voltage Directly proportional to supply frequency None of the listed here 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 The all day efficiency of a transformer is ______ the commercial efficiency. None of the listed here Less than More than The same as None of the listed here Less than More than The same as ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Magnetising current is abnormally high None of the listed here Primary reactance is too much increased Permeability of core is increased Magnetising current is abnormally high None of the listed here Primary reactance is too much increased Permeability of core is increased ANSWER DOWNLOAD EXAMIANS APP
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