Transformers In a transformer routine efficiency depends upon Both power factor and load current Supply frequency Power factor of load Load current Both power factor and load current Supply frequency Power factor of load Load current ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Voltage Power Frequency Current Voltage Power Frequency Current ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Copper Silicon steel Wood Aluminium Copper Silicon steel Wood Aluminium ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Air motor Synchronous motor Shunt motor Induction motor Air motor Synchronous motor Shunt motor Induction motor ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Is negligible at full load Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Is negligible at full load Produces mutually induced emf ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one approximately equal to one less than one None of these great than one approximately equal to one less than one None of these ANSWER DOWNLOAD EXAMIANS APP
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