SSC JE Electrical 2019 with solution SET-1
 Two coupled coils with L1 = L2 = 0.5H have a coupling coefficient of K = 0.75. The turn ratio N1 ⁄ N2 = ?

1
2
0.5
4

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SSC JE Electrical 2019 with solution SET-1
 Which of the following should be used under no-load conditions?

Rewireable fuse
Isolator
Air-break switch
Circuit breaker

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