SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____

3
2
1
0

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SSC JE Electrical 2019 with solution SET-2
The wattage rating of a single-phase induction motor used as a ceiling fan will be in the range of

600 to 800 W
200 to 500 W
10 to 50 W
50 to 150 W

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SSC JE Electrical 2019 with solution SET-2
Voltage regulation is considered to be the best for transmission lines?

983
1003
23
403

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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?

Iron
Glass
Nichrome
Silver

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

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

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