Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?
A. Platinum-platinum + rhodium
B. Iron-constantan
C. Chromel-constantan
D. All of the above
Answer: Option C
This Question Belongs to Chemical Engineering >> Process Control And Instrumentation
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Phase lag of the frequency response of a second order system to a sinusoidal forcing function
A. Is 30°
B. Is 90° at the most
C. Approaches 180° asymptotically
D. Is 120°
Which of the following is not classified as a thermo electric pyrometer?
A. Resistance thermometer
B. Thermocouple
C. Optical pyrometer (disappearing filament type)
D. Radiation pyrometer
A. Chromel-alumel
B. Iron-constantan
C. Platinum-platinum/rhodium
D. None of these
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