Transformers If a transformer core has air gaps, then, _________ 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 Hysteresis loss is decreased ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is decreased, ______loss is decreased Copper Friction Hysteresis Eddy current Copper Friction Hysteresis Eddy current ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay All of these Overfluxing protection Overcurrent protection Buchholz relay All of these Overfluxing protection Overcurrent protection ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it avoids core saturation and high voltage induction protects the primary circuit None of these is safe to human beings avoids core saturation and high voltage induction protects the primary circuit None of these is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Current transformer Voltage transformer Auto transformer Power transformer Current transformer Voltage transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
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