Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Auto transformer Step-up transformer Current transformer Potential transformer Auto transformer Step-up transformer Current transformer Potential transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which has core of stainless steel and winding of pure copper metal no losses and magnetic leakage a common core for its primary and secondary windings interleaved primary and secondary windings core of stainless steel and winding of pure copper metal no losses and magnetic leakage a common core for its primary and secondary windings interleaved primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Is negligible at full load Helps in transfer of energy Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Is negligible at full load Helps in transfer of energy ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Copper Wood Silicon steel Aluminium Copper Wood Silicon steel Aluminium ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ? 250 Ω 6250 Ω 62500 Ω 25 Ω 250 Ω 6250 Ω 62500 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a power transformer should always be switched fused shorted open switched fused shorted open ANSWER DOWNLOAD EXAMIANS APP
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