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 100

Greater than 1

Greater than 10

Less than 1

Greater than 100

Greater than 1

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SSC JE Electrical 2018 with solution SET-1
A house has 5 fans of 70 W each that operates for 16 hours a day and one washing machine of 2000 W that operates for 1 hours per day in the month of June. What is the energy consumption(in kWh) of the house in the month of June?

228

235.6

350

486.6

228

235.6

350

486.6

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SSC JE Electrical 2018 with solution SET-1
The main drawback of resistance welding is

None of these

Difficult shapes and sections cannot be welded

Only similar metals can be welded

High initial as well as High maintenance cost

None of these

Difficult shapes and sections cannot be welded

Only similar metals can be welded

High initial as well as High maintenance cost

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SSC JE Electrical 2018 with solution SET-1
In three phase induction motor maximum torque is Inversely Proportional to the

Decreasing Slip speed

Stator Voltage

Speed of Rotor

Rotor Reactance

Decreasing Slip speed

Stator Voltage

Speed of Rotor

Rotor Reactance

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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

7.92

6.25

8.84

5.75

7.92

6.25

8.84

5.75

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SSC JE Electrical 2018 with solution SET-1
Determine the reluctance (in Amp-turns/Wb) of a coil, when the flux through the coil is 15 Wb and the produced MMF is 30 Amp-turns

2

3

1

4

2

3

1

4

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