Transformers The maximum efficiency of a distribution transformer is at no load at 80% full load at 50% full load at full load at no load at 80% full load at 50% full load at full load ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Leakage reactance None of the listed here Reactive power Apparent power Leakage reactance None of the listed here Reactive power Apparent power ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Overcurrent protection Buchholz relay All of these Overfluxing protection Overcurrent protection Buchholz relay All of these Overfluxing protection ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Hysteresis loss is decreased Reluctance of magnetic path is decreased Magnetising current is greatly increased Eddy current is increased Hysteresis loss is decreased Reluctance of magnetic path is decreased Magnetising current is greatly increased Eddy current is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformer to determine Stray losses Temperature All day efficiency None of the listed here Stray losses Temperature All day efficiency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? None of the listed here Air cooled Water cooled Oil cooled None of the listed here Air cooled Water cooled Oil cooled ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS