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

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

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SSC JE Electrical 2019 with solution SET-1
 For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

1, 5 and 10
1, 7 and 14
1, 4 and 8
1, 6 and 12

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SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To protect the motor from overloading
To out in the capacitor during running conditions
To cut-off the starting winding at an appropriate instant
To improve the starting performance of the motor

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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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