Process Control and Instrumentation MCQs

Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

In second order underdamped system,

All the thermocouples used for temperature measurement use dissimilar metal

In a closed loop system, the process to be controlled is an integrating process with transfer function $$\frac{1}{{2{\text{s}}}}.$$ The controller proposed to be used in an integral controller with transfer function $$\frac{1}{{{{\text{T}}_1}{\text{s}}}}.$$  When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit

The response of two tanks of same size and resistance in series is

Pressure of 0.0001 absolute psi can be measured by __________ gauge.

In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Which of the following controllers has the least maximum deviation?

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured?