SSC JE Electrical 2018 with solution SET-1
A PMMC type voltmeter, having a full-scale reading of 250 V and an internal resistance of 400 kilo-ohms, is connected with the series resistance of 100 kilo-ohms. Calculate the sensitivity of the voltmeter (in Ohms/Volts)

20000
2000
24000
2400

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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
8.84
7.92
5.75

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SSC JE Electrical 2018 with solution SET-1
A circuit having the power factor of 0.8 consumes 40 W. What will be the value of reactive power (in VAR) of the circuit?

20
10
30
40

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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?

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

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