SSC JE Electrical 2019 with solution SET-1
 A single-phase circuit’s power factor can be measured with a/an

Combination of a voltmeter, ammeter, and wattmeter
Wattmeter alone
Combination of a voltmeter and ammeter
Energy meter alone

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SSC JE Electrical 2019 with solution SET-1
 Which of the following is the correct relation regarding coupled coils?

M = (L1 + L2)/2
M > (L1L2)0.5
M ≤ (L1L2)0.5
M = (L1 − L2)/2

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SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

Lagging
Zero
Leading
Unity

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SSC JE Electrical 2019 with solution SET-1
 The Norton’s current in the circuit shown below is

12A
4A
2A
120A

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