Which one of the following is NOT a material used for wire-wound resistors?

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. Tungsten
  2. Copper
  3. Manganin
  4. Eureka

Answer (Detailed Solution Below)

Option 1 : Tungsten
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Detailed Solution

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Wire Wound Resistor:

F2 S.B 11.9.20 Pallavi D 19

In this, a metal wire is winding around the metalcore. A metal wire is used for resistance and the metalcore is used as an insulator.

Wire resistance is made up by alloy the following alloys:

  • Copper-Nickel – Manganese called manganin.
  • Copper-Nickel called Eureka or constantan


Insulator materials are ceramic, plastic, and glass

Note: Tungsten is used for making filament of bulbs because it has very high melting points.

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