Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 880 V 73 V 7.3 V 88 V 880 V 73 V 7.3 V 88 V ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Supply frequency Load current Power factor of load Both power factor and load current Supply frequency Load current Power factor of load Both power factor and load current ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 250 kVA 1000 kVA 3000 kVA 500 kVA 250 kVA 1000 kVA 3000 kVA 500 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. Smaller than None of the listed here Greater than About the same as Smaller than None of the listed here Greater than About the same as ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformer to determine All day efficiency Stray losses Temperature None of the listed here All day efficiency Stray losses Temperature None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary induced e.m.f. to primary induced e.m.f. secondary current to primary current primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary induced e.m.f. to primary induced e.m.f. secondary current to primary current ANSWER DOWNLOAD EXAMIANS APP
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