Transformers A transformer is an efficient device because it _______ Uses capacitive coupling Uses electric coupling Is a static device Uses inductive coupling Uses capacitive coupling Uses electric coupling Is a static device Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is less than one None of these great than one approximately equal to one less than one None of these great than one approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Total losses Friction losses Iron losses Copper losses Total losses Friction losses Iron losses Copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Wood Aluminium Copper Silicon steel Wood Aluminium Copper Silicon steel ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine copper loss magnetising current and loss efficiency of the transformer magnetising current copper loss magnetising current and loss efficiency of the transformer magnetising current 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 s.N. Ns (l-s)Ns (Ns-l)s s.N. Ns (l-s)Ns ANSWER DOWNLOAD EXAMIANS APP
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