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Transformers
If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is
2.5 W
25 W
0 W
250 W
2.5 W
25 W
0 W
250 W
Answer
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Related Question
Transformers
A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is
5
0.4
25
0.2
5
0.4
25
0.2
Answer
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Transformers
Natural air cooling is generally restricted for transformers up to
15 MVA
1.5 MVA
5 MVA
50 MVA
15 MVA
1.5 MVA
5 MVA
50 MVA
Answer
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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
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Transformers
Sumpner's test is conducted on transformer to determine
Temperature
All day efficiency
Stray losses
None of the listed here
Temperature
All day efficiency
Stray losses
None of the listed here
Answer
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Transformers
The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is
10 A
20 A
15 A
5 A
10 A
20 A
15 A
5 A
Answer
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