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
2286.3
3048.4
2861.2

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SSC JE Electrical 2018 with solution SET-1
 Which one of the following statement is NOT true about PMMC type instruments?

These instruments are suitable for both AC and DC currents
PMMC type Instruments have uniformly divided scale
The cost of PMMC instruments is high
Stray magnetic errors are small in these types of instruments

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SSC JE Electrical 2018 with solution SET-1
 Which of the following is the CORRECT formula for permeance?

Fm/L
φ/Fm
B/H
I/H

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SSC JE Electrical 2018 with solution SET-1
  What will be the equivalent capacitance (in mF) of three capacitors connected in a series having the capacitance of 0.04 mF, 0.08 mF, and 0.02 mF respectively?

0.065
0.026
0.032
0.011

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SSC JE Electrical 2018 with solution SET-1
 Determine the voltage (in V) of a battery connected to a parallel plate capacitor (filled with air) when the area of the plate is 10 square centimeters, the separation between the plate is 5 mm and the charged stored on the plate is 20 pC

10.3
12.3
11.3
14.3

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