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 is the correct relation regarding coupled coils?

M > (L1L2)0.5
M = (L1 + L2)/2
M ≤ (L1L2)0.5
M = (L1 − L2)/2

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SSC JE Electrical 2019 with solution SET-1
 Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

Power consumed by Z1 and Z2
Power consumed by Z2
Power consumed by Z1
Zero always

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SSC JE Electrical 2019 with solution SET-1
_______is a tube that brings water to turbines

Forebay
Trash rack
Spillway
Penstock

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