Cable Multiple Choice Questions and Answers

46.  The surge resistance of cable is

   A. 5 ohms

   B. 20 ohms

   C. 50 ohms

   D. 100 ohms

47.  In the cables the location of fault is usually found out by comparing

   A. The resistance of the conductor

   B. The inductance of the conductor

   C. The capacitance of insulated conductors

   D. All of the above

48  underground cables are laid at sufficient depth

   A. To minimise temperature stresses

   B. To avoid being unearthed easily due to removal of soil

   C. To minimise the effect of shocks and vibrations due to passing vehicles etc.

   D. All of the above

49.  The thickness of metallic shielding on cables is usually

   A. 0.04 mm

   B. 0.2 mm to 0.4 mm

   C. 3 mm to 5 mm

   D. 40 mm to 60 mm

   E. 60 mm to 80 mm

50.  cables for 220 KV lines

   A. Mica insulated

   B. Paper insulated

   C. Compressed oil or compressed gas insulated

   D. Rubber insulated

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