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Which of the following high resistance materials have highest operating temperature?
1. Kanthal
2. Manganin
3. Nichrome
4. Eureka

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Correct Answer - Option 1 : Kanthal

Type of Alloy

Commercial name

Max. operating temperature

Nickel chromium

Nichrome

1150°C

Nickel chromium iron

 

950°C

Nickel copper

Eureka or constantan

400°C

Iron chromium aluminum

Kanthal

1200°C

Silicon Carbide

 

1600°C to 2500°C

Molybdenum

 

760°C

 

Kanthal has the highest temperature range among the given heating elements.

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