Transformers The primary and secondary of a transformer are ______ coupled. Magnetically None of the listed here Electrically Electrically and magnetically Magnetically None of the listed here Electrically Electrically and magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased None of the listed here Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 50 per cent 98 per cent 100 per cent 25 per cent 50 per cent 98 per cent 100 per cent 25 per cent ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is capacitive only None of these inductive only inductive or resistive capacitive only None of these inductive only inductive or resistive ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is 0.4 5 25 0.2 0.4 5 25 0.2 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 (l-s)Ns (Ns-l)s s.N. Ns (l-s)Ns (Ns-l)s s.N. Ns ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS