SSC JE Electrical 2019 with solution SET-1
 The law that explains about the economic size of a conductor is:

Newton’s law
Faraday’s law
Kelvin’s law
Lamberts law

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SSC JE Electrical 2019 with solution SET-1
 Which of the following should be used under no-load conditions?

Isolator
Air-break switch
Rewireable fuse
Circuit breaker

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SSC JE Electrical 2019 with solution SET-1
 Two bulbs of rating 230V, 60W, and 230V, 100W are connected in parallel across supply mains, Identify the correct statement

Both will glow equally bright
The 100W bulb will glow brighter
The 60W bulb will glow brighter
Neither bulb will glow

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SSC JE Electrical 2019 with solution SET-1
 Lamp efficiency is measured in

Lux/watt
Lumen/lux
Candela/watt
Lumen/watt

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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?

40Ω
30Ω
10Ω
20Ω

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