SSC JE Electrical 2019 with solution SET-2
The names of the four materials have been given, select the one which has the least resistivity at 20°C?

Silver
Iron
Nichrome
Glass

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SSC JE Electrical 2019 with solution SET-2
____ Lamps are used to light up sports stadiums?

Sodium vapor lamps
LED lamps
Incandescent lamps
Fluorescent lamps

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SSC JE Electrical 2019 with solution SET-2
If the AC voltage and current are given by the following expressions?
v = 200sin (314t — 60°)
i = 50sin (720t), then what is the phase relation between them?

Voltage and current are in phase
Can’t be determined
Voltage leads current by 60°
Voltage lags current by 60°

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SSC JE Electrical 2019 with solution SET-2
The work done on or by a unit N-pole in moving once around a closed path is equal to

Magnetic flux density
The product of current and number of turns enclosed by that path
The product of flux and number of turns enclosed by that path
Reluctance

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SSC JE Electrical 2019 with solution SET-2
A long straight wire carries a current I = 10 A. At what distance is the magnetic field H = 1 A/m?

5/2π
1/2 π
10/2π
20/2π

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