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Which of the following materials are generally not used for the construction of filaments in thermal conductivity analyzers?(a) Tungsten(b) Gold(c) Platinum(d) KovarThis question was posed to me in my homework.My question comes from Thermal Conductivity Analysers topic in chapter Industrial Gas Analysers of Analytical Instrumentation

Answer»

The correct answer is (B) Gold

For explanation I WOULD say: Gold is generally not USED for the CONSTRUCTION of FILAMENTS in thermal conductivity analyzers. The materials used have high temperature-coefficient of resistance.



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