SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1
Please check out below figure.

1 Ω

2 Ω

10 Ω

5 Ω

1 Ω

2 Ω

10 Ω

5 Ω

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SSC JE Electrical 2019 with solution SET-1
In electric traction, the coefficient of adhesion is represented by

λ

μ

γ

Φ

λ

μ

γ

Φ

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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:

0.9

1

0.8

0.5

0.9

1

0.8

0.5

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SSC JE Electrical 2019 with solution SET-1
Two decimal coils A and B of 1000 turns each lies in the parallel plane such that 80% of the flux produced by one coil links with the other. If a current of 5A flowing in A produces a flux of 0.05 mWb, then the flux linking with coil B is:

0.004 mWb

0.4 mWb

4 mWb

0.04 mWb

0.004 mWb

0.4 mWb

4 mWb

0.04 mWb

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SSC JE Electrical 2019 with solution SET-1
What would the total loss of the 2kVA transformer corresponding to maximum efficiency be, provided the transformer has the iron of 150 W and full-load copper loss of 250W?

300 W

400 W

500 W

100 W

300 W

400 W

500 W

100 W

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SSC JE Electrical 2019 with solution SET-1
At f = _____R – L – C series circuit operates at unity power factor

1 ⁄ LC

1/RC

1/2π√LC

1 ⁄ RLC

1 ⁄ LC

1/RC

1/2π√LC

1 ⁄ RLC

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