Transformers Which of the following insulating materials can withstand the highest temperature safely? Mica Asbestos Cellulose Glass fibre Mica Asbestos Cellulose Glass fibre ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping locking of rotor due to harmonics pulling the motor directly on line without a starter starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping locking of rotor due to harmonics pulling the motor directly on line without a starter ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core mechanical vibrations poor insulation fluctuating load saturation of core mechanical vibrations poor insulation fluctuating load ANSWER DOWNLOAD EXAMIANS APP
Transformers When secondary of a current transformer is open-circuited its iron core will be none of above will happen hot because primary will carry heavy current hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current none of above will happen hot because primary will carry heavy current hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current ANSWER DOWNLOAD EXAMIANS APP
Transformers A shell-type transformer has negligibly hysteresis losses None of these reduced magnetic leakage high eddy current losses negligibly hysteresis losses None of these reduced magnetic leakage high eddy current losses ANSWER DOWNLOAD EXAMIANS APP
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