Transformers The turns ratio required to match an 80 source to a 320 load is 80 20 4 2 80 20 4 2 ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is negligible at full load Produces mutually induced emf Helps in transfer of energy Is minimised by interleaving the primary and secondary windings Is negligible at full load Produces mutually induced emf Helps in transfer of energy Is minimised by interleaving the primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in increased I2R losses increased core losses All of the listed here magnetic interference with communication circuits increased I2R losses increased core losses All of the listed here magnetic interference with communication circuits ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Synchronous motor Induction motor Air motor Shunt motor Synchronous motor Induction motor Air motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because copper loss becomes high in proportion to the output iron loss is increased considerably secondary output is much less as compared to primary input voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output iron loss is increased considerably secondary output is much less as compared to primary input voltage drop both in primary and secondary becomes large ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Iron core is used Losses are small Applied voltage and frequency are constant Leakage flux is small Iron core is used Losses are small Applied voltage and frequency are constant Leakage flux is small ANSWER DOWNLOAD EXAMIANS APP
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