Paper Insulated Cable Multiple Choice Questions and Answers

16.  Paper used as an insulating material is usually treated with only compound because it

   A.Is hygroscopic

   B.Gets electrostatically charged at high-voltage

   C.Is porous

   D.All of the above

17. Paper is an insulating material has the main drawback that it

   A.Is hygroscopic

   B.Has Paul dielectric strength

   C.Has low installation resistivity

   D.Has high capacitance

18.  In paper insulated cables the contactor X section is usually limited to

   A.50 mm²

   B.250 mm²

   C.600 mm²

   D.1200 mm²

19.  The dielectric strength of impregnated paper is about

   A.30 KV/mm

   B.20 KV/mm

   C.15 kV/mm

   D.Any of the above

   E.None of the above

20.  Empire tape is

   A. Varnished Cambric

   B. Impregnated paper

   C. vulcanised rubber

   D. Enamel insulation

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