Process Control And Instrumentation MCQ Questions & Answers | Chemical Engineering

A. Mercury in glass thermometer with covering

B. Bare mercury in glass thermometer

C. Pressure gauge with one bellow, two tubes and a tank

D. None of these

A. 32°R

B. 273°K

C. 492°R

D. 32°F

A. $$ - \infty ,\,\frac{\pi }{2}$$

B. $$ - \frac{\pi }{2},\,\frac{\pi }{2}$$

C. $$ - \frac{\pi }{2},\,0$$

D. $$0,\,\frac{\pi }{2}$$

A. 63.2

B. 87.5

C. 95

D. 100

A. One cell

B. Two cells

C. Three cells

D. No cell

A. 180° - phase lag

B. Phase lag - 180°

C. Phase lag + 180°

D. Phase lag + 90°

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. O₂, NO and NO₂ exhibit paramagnetic properties as a result of unpaired electrons

B. CO₂ is the strongest paramagnetic gas

C. Paramagnetic susceptibility of gases decreases with temperature

D. Paramagnetic susceptibility of gases permits the measurement of their concentration

A. There is no transfer lag for a single first order system

B. Stirred tank with a water jacket exemplifies an interacting system

C. Transfer lag is a characteristics of all higher order systems (other than first order systems)

D. Transfer lag decreases as the number of stages decreases

A. Of cold junction only

B. Of hot junction only

C. Difference between hot and cold junctions

D. Difference between cold junction and atmospheric temperature