Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 mH 8 μH 2 μH 4 μH 2 mH 8 μH 2 μH 4 μH ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following parts of a transformer is visible from outside? Bushings Secondary winding Core Primary winding Bushings Secondary winding Core Primary winding ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 200 W 400 W None of the listed here 100 W 200 W 400 W None of the listed here 100 W ANSWER DOWNLOAD EXAMIANS APP
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? 7.3 V 73 V 88 V 880 V 7.3 V 73 V 88 V 880 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Iron core is used Applied voltage and frequency are constant Leakage flux is small Losses are small Iron core is used Applied voltage and frequency are constant Leakage flux is small Losses are small ANSWER DOWNLOAD EXAMIANS APP
Transformers How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? 90 V 0.9 V 9 V 900 V 90 V 0.9 V 9 V 900 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS