SSC JE Electrical 2018 with solution SET-1

SSC JE Electrical 2018 with solution SET-1
The relative permeability of the diamagnetic material is

Greater than 10

Less than 1

Greater than 1

Greater than 100

Greater than 10

Less than 1

Greater than 1

Greater than 100

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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

0.8

1.6

0.4

1.4

0.8

1.6

0.4

1.4

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SSC JE Electrical 2018 with solution SET-1
Determine the percentage voltage error of a potential transformer with the system voltage of 11000 V and having a turn’s ratio of 104 if the measured secondary voltage is 98 V

6.25

7.92

8.84

5.75

6.25

7.92

8.84

5.75

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SSC JE Electrical 2018 with solution SET-1
Determine the magnitude of EMF (in V) induced between the axis of rotation and the rim of the disc, when the disc of radius 10 cm rotates with an angular velocity of 60 revolutions per second and placed in the magnetic field of 3 T acting parallel to the rotation of the disc

6.67

6.69

5.65

4.64

6.67

6.69

5.65

4.64

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SSC JE Electrical 2018 with solution SET-1
In the large machine, the flat copper strips known as

Windings

Bushes

Risers

Either of these

Windings

Bushes

Risers

Either of these

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SSC JE Electrical 2018 with solution SET-1
Power consumed by a balanced star connected 3-phase load is measured using the two-wattmeter method. The phase voltage and phase current in the load is 220V and 10 A respectively. What will be the difference in reading (in W) of the two wattmeters, if the power factor of the system is 0.8 Lagging?

3810.5

2861.2

2286.3

3048.4

3810.5

2861.2

2286.3

3048.4

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