Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 18 5.5 0.018 0.18 18 5.5 0.018 0.18 ANSWER DOWNLOAD EXAMIANS APP
Transformers Two things which are same for primary and secondary of transformer are ______ Currents and induced voltages Resistance and leakage reactances None of the listed here Ampere turns and voltage per turns Currents and induced voltages Resistance and leakage reactances None of the listed here Ampere turns and voltage per turns 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? 9.6 4 0.96 0.4 9.6 4 0.96 0.4 ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 50 Hz 2kVA, 200 Hz 2kVA, 400 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 200 Hz 2kVA, 400 Hz 2kVA, 500 Hz 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
Transformers The principle of working of transformer is Self induction Static induction Mutual induction Dynamic induction Self induction Static induction Mutual induction Dynamic induction ANSWER DOWNLOAD EXAMIANS APP
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