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. Kovar
Answer:B
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. Kovar
Explanation: Gold is generally not used for the construction of filaments in thermal conductivity analyzers. The materials used have high temperature-coefficient of resistance.