Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Potential transformer Power transformer Current transformer Auto transformer Potential transformer Power transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Shunt motor Synchronous motor Air motor Induction motor Shunt motor Synchronous motor Air motor Induction motor ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 5 A 10 A 15 A 20 A 5 A 10 A 15 A 20 A ANSWER DOWNLOAD EXAMIANS APP
Transformers By laminating the core of a transformer, we decrease _____ Eddy current loss Copper loss Leakage reactance Hysteresis loss Eddy current loss Copper loss Leakage reactance Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core poor insulation mechanical vibrations fluctuating load saturation of core poor insulation mechanical vibrations fluctuating load ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is inductive or resistive inductive only None of these capacitive only inductive or resistive inductive only None of these capacitive only ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS