SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

0.8
1
0.9
0.5

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SSC JE Electrical 2019 with solution SET-1
 Which of the following is the correct relation regarding coupled coils?

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

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SSC JE Electrical 2019 with solution SET-1
 The average value of a sinusoidal wave is:

0.5 × maximum value
0.637 × maximum value
√2 × maximum value
2 × maximum value

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SSC JE Electrical 2019 with solution SET-1
 The output of the logic circuit given below represents the gate.

NAND
OR
AND
NOR

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