Category: Process Control and Instrumentation

A. Phosphor bronze
B. Monel metal
C. Stainless steel
D. Cast iron

A. Bimetallic thermometers
B. Thermocouples
C. Thermostats
D. Relays for opening & closing of electrical circuits

A. Product
B. Ratio
C. Sum
D. Difference

A. Volumetric expansion
B. Pressure rise with temperature
C. Linear expansion
D. None of these

A. Making the volume of thermometer bulb as large as conveniently possible
B. Reducing the volume of the capillary to a minimum
C. Reducing the volume of the receiving element to a minimum
D. All A , B & C.

A. Liquid temperatures only
B. Very high temperatures only
C. Very low temperatures only
D. Both high and low temperatures

A. Roots of the characteristic equation should be real
B. Poles of the closed loop transfer function should lie in the left half of the complex plane
C. Bode plots of the corresponding open loop transfer function should monotonically decrease
D. Poles of the closed loop transfer function should lie in the right half of the complex plane

A. Low loads
B. Temperature changes
C. Flow rate changes
D. None of these

A. Chromel-alumel
B. Iron-constantan
C. Platinum-rhodium
D. Platinum-platinum + rhodium

A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer