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

10%

2%

5%

Zero

10%

2%

5%

Zero

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SSC JE Electrical 2018 with solution SET-1
Determine the phase angle (in degrees) of a balanced 3-phase star connected system, if the first and the second wattmeter show reading of 200 W and 1200 W respectively

84

65

78

51

84

65

78

51

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SSC JE Electrical 2018 with solution SET-1
What is the peak-to-peak value of a sinusoidal voltage (in V) having the average value of 100 V?

159.98

141.44

282.88

314

159.98

141.44

282.88

314

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SSC JE Electrical 2018 with solution SET-1
Determine the magnetic field strength (in A/m) of a material when the intensity of magnetization of the material is 0.084 Amp/m and the magnetic susceptibility of the material is 0.0012

0.07

0.7

70

700

0.07

0.7

70

700

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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

1.21

1.94

2.24

3.34

1.21

1.94

2.24

3.34

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SSC JE Electrical 2018 with solution SET-1
A 3-phase star connected system is supplied by a line voltage of 440 V. The value of the current is 50 A. What is the power (in kW) consumed by the system, if the current lags the voltage by 45 degrees?

47

24

8.95

26.94

47

24

8.95

26.94

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