Category: Process Control and Instrumentation

A. Response
B. Tine lag
C. Drift
D. Dynamic error

A. -38.9
B. -11.9
C. -60.9
D. -80.9

A. Proportional controller is normally used for level control in industrial applications
B. CSTR can be considered as a distributed parameter system
C. Distributed parameter approach gives partial differential equation
D. Non-linear behaviour is exemplified by an on-off controller

A. Criterion provides information about the actual location of roots
B. Cannot be used to test the stability of a control system containing transportation lag
C. Criterion is not applicable to systems with polynomial characteristic equation
D. Cannot determine as to how many roots of the characteristics equation have positive real roots

A. Mercury in glass thermometer (without any covering or air gap)
B. Bare metallic thermometer
C. Bare vapor pressure thermometer
D. All A., B. and C.

A. 180° – phase lag
B. Phase lag – 180°
C. Phase lag + 180°
D. Phase lag + 90°

A. Solids
B. Alkali metals
C. Natural gas
D. Isotopes

A. Oxygen in
B. Carbon dioxide in
C. Carbon monoxide in
D. Temperature of

A. 1/(S2 + 2)
B. 1/(S2 – 2S + 3)
C. 1/(S2 + 2S + 2)
D. exp (-20 S)/(S2 + 2S – 1)

A. For which the output response is bounded for all bounded input
B. Which exhibits an unbounded response to a bounded input
C. Which satisfies the conditions for a servo problem
D. None of these