Process Control and Instrumentation MCQs

On-off controllers are normally used for

An aneroid barometer measures the __________ pressure.

Composition of natural gas is determined by the

Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Thermal wells used in temperature measurements should have

A typical example of a physical system with under damped characteristic is a

The term analogous to the electrical current in a thermal system is the

Suppose that the gain, time constant and dead time of a process with the following transfer function:G_c(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain K_c of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is