SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

0.8
0.9
1
0.5

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SSC JE Electrical 2019 with solution SET-1
 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

10Ω
30Ω
20Ω
40Ω

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

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SSC JE Electrical 2019 with solution SET-1
 Hysteresis loss is NOT a function of

Steinmetz co-efficient of material
Frequency
The volume of a material
Ambient temperature

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