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Electrical Cables

Electrical Cables
If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be

30 cm
50 cm
100 cm
20 cm

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Electrical Cables
In cables the charging current

Leads the voltage by 180°
Lags the voltage by 90°
Lags the voltage by 180°
Leads the voltage by 90°

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Electrical Cables
In the cables, sheaths are used to

Provide proper insulation
Prevent the moisture from entering the cable
None of the listed here
Provide enough strength

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Electrical Cables
High tension cables are generally used up to

33 kV
132 kV
11 kV
66 kV

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Electrical Cables
The insulating material should have

All of the listed here
Low permittivity
High dielectric strength
High resistivity

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Electrical Cables
The material for armouring on cable is usually

None of the listed here
Steel tape
Galvanized steel wire
Both Steel tape and Galvanized steel wire

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