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
 The laws involved in the expression e  = −dφ/dt are

Coulomb’s and Ampere’s laws
Faraday’s and Ampere’s laws
Faraday’s and Lenz’s laws
Coulomb’s and Faraday’s laws

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SSC JE Electrical 2019 with solution SET-1
 Split-phase, capacitor, and shaded-pole single-phase motors classified as:

Repulsion motors
1-phase induction motors
Un-excited synchronous motors
A.C. series motors

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

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

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