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
2400
24000

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

φ/Fm
I/H
B/H
Fm/L

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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?

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

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SSC JE Electrical 2018 with solution SET-1
 What is the magnitude of the reactive power (in kVAR) of a balanced 3-phase delta connected system having the line voltage of 400 V and the line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?

277.1
2.771
27.71
0.2771

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