Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?
Options
A. Nickel
B. Brass
C. Chromel
D. Invar
Correct Answer
Brass
Process Control and Instrumentation problems
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1. Characteristic equation is the denominator of __________ loop transfer function.
5. Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm3.