SSC JE Electrical 2018 with solution SET-1

SSC JE Electrical 2018 with solution SET-1
The maximum speed variation in a synchronous motor is

Zero

2%

10%

5%

Zero

2%

10%

5%

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SSC JE Electrical 2018 with solution SET-1
What is the value of current I4 (in A) for the given junction?

4

6

−4

−6

4

6

−4

−6

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SSC JE Electrical 2018 with solution SET-1
In a synchronous motor which loss varies with the load?

Core Loss

Bearing friction Loss

Windage loss

Copper Loss

Core Loss

Bearing friction Loss

Windage loss

Copper Loss

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SSC JE Electrical 2018 with solution SET-1
Determine the maximum flux density (in T) of a material having eddy current coefficient of 2, the thickness of 4 mm, the volume of 20 cu.meter, which is supplied by the frequency of 50 Hz when the material has eddy current loss of 6 W

3.34

1.94

1.21

2.24

3.34

1.94

1.21

2.24

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SSC JE Electrical 2018 with solution SET-1
Determine the energy (in J) stored by a 0.4 H inductance, If the current flowing through it is 2A

1.6

1.4

0.4

0.8

1.6

1.4

0.4

0.8

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SSC JE Electrical 2018 with solution SET-1
Scott connections are used for

Three Phase to Single Phase transformation

Three-phase to two-phase transformation

Any of the above

Single-phase to three-phase transformation

Three Phase to Single Phase transformation

Three-phase to two-phase transformation

Any of the above

Single-phase to three-phase transformation

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