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?

3048.4
2286.3
2861.2
3810.5

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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?

314
282.88
141.44
159.98

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SSC JE Electrical 2018 with solution SET-1
The welding electric circuit is______

Through cables Only
None of these
Always Earthed
Never Earthed

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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
8.84
5.75
6.25

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