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

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

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SSC JE Electrical 2019 with solution SET-1
_____ is NOT a component in a thermal power plant

Chimney
Boiler
Economizer
Reactor

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SSC JE Electrical 2019 with solution SET-1
 The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as

R2 ⁄ (1 + S)
R2 ⁄ (2 − S)
R2 ⁄ S
R2 ⁄ (1 − S)

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SSC JE Electrical 2019 with solution SET-1
 The average value of a sinusoidal wave is:

0.5 × maximum value
√2 × maximum value
2 × maximum value
0.637 × maximum value

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