Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of 15 A more than 15 A less than 15 A None of these 15 A more than 15 A less than 15 A None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because Uses capacitive coupling A static device Uses electric coupling Uses inductive coupling Uses capacitive coupling A static device Uses electric coupling Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Burden of a current transformer is usually expressed in Amperes Volt amperes Volts Kilowatt Amperes Volt amperes Volts Kilowatt 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 13 Ω 7.8 Ω 1.3 Ω 78 Ω 13 Ω 7.8 Ω 1.3 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be Ns (l-s)Ns (Ns-l)s s.N. Ns (l-s)Ns (Ns-l)s s.N. ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Potential transformer Auto transformer Current transformer Power transformer Potential transformer Auto transformer Current transformer Power transformer ANSWER DOWNLOAD EXAMIANS APP
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