Transformers A shell-type transformer has high eddy current losses reduced magnetic leakage None of these negligibly hysteresis losses high eddy current losses reduced magnetic leakage None of these negligibly hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 50 per cent 25 per cent 98 per cent 100 per cent 50 per cent 25 per cent 98 per cent 100 per cent ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers Primary winding of a transformer is always a low voltage winding is always a high voltage winding could either be a low voltage or high voltage winding None of these is always a low voltage winding is always a high voltage winding could either be a low voltage or high voltage winding None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because Uses capacitive coupling Uses electric coupling A static device Uses inductive coupling Uses capacitive coupling Uses electric coupling A static device Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is less than one approximately equal to one None of these great than one less than one approximately equal to one None of these great than one ANSWER DOWNLOAD EXAMIANS APP
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