Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Synchronous motor Shunt motor Air motor Induction motor Synchronous motor Shunt motor Air motor ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 1:1 2:1 Can be any ratio 1:2 1:1 2:1 Can be any ratio 1:2 ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 50% load 25% load 90% load Zero load 50% load 25% load 90% load Zero load ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise resulting from vibrations of laminations set by magnetic forces, is termed as Boo Hum Zoom Magnetostriction Boo Hum Zoom Magnetostriction ANSWER DOWNLOAD EXAMIANS APP
Transformers Burden of a current transformer is usually expressed in Volt amperes Kilowatt Volts Amperes Volt amperes Kilowatt Volts Amperes ANSWER DOWNLOAD EXAMIANS APP
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