Question

A cable measures 500/1000 inch outside diameter and has 12/1000 inch of cotton and 50/1000 inch of rubber insulation . Determine the diameter of the copper conductor (wire)

8. A cable measures inch outside diameter and has a inch of cot- ton and inch of rubber insulation. Determine the diameter of the copper conductor (wire). SECTION 2 COMMON FRACTIONS Rubber Insulation- Cotton Wire 12 1,000 * 50 1,000 500" 1,000 sd Jaum sendo birls on 9. A %-inch hole must be enlarged to % inch to insert a bushing. How much wider than the original hole will this be? 10. A motor commutator 3% inches in diameter is turned down to remove a flat spot. If Xinch is removed from the surface, find the finished diameter. EMU

Answer 1

Answer -8

   Given,

   Outside diameter = 500 / 1000 inch = 0.5 inch

   Cotton insulation = 12 / 1000 inch = 0.012 inch

   Rubber insulation = 50 / 1000 inch = 0.05 inch

The diameter of the copper conductor(wire) = Outer diameter - 2 x cotton insulation - 2 x rubber insulation

The diameter of the copper conductor(wire) = 0.5 - 2 x 0.012 - 2 x 0.05

The diameter of the copper conductor(wire) = 0.376 inch = 376 / 1000 inch