Process Instrumentation and Control - Interview Questions | Exam2Win

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11. The % age of silica in water is measured by a :

A. colorimeter

B. photometer

C. electro chemical equipment

D. conductivity cell

E. Katharometer.

Explanation:

12. The stability, accuracy, and speed ofresponse of a control system are determined by analysing :

A. its mathematical model

B. closed-loop feedback control system

C. steady-state response

D. transient response

E. steady-state and transient response.

Explanation:

13. Errors due to assignable causes are called :

A. static errors

B. systematic errors

C. calibration errors

D. random errors

E. known errors.

Explanation:

14. The sensitivity of reading of manometer can be increased by :

A. inclining the manometer rube

B. using low specific gravity fluid

C. application of optical magnification

D. use of level sensing device

E. all of the above.

Explanation:

15. Which effect is useful in measuring rapidly varying forces :

A. piezoelectric

B. strain gauge

C. photovoltaic

D. pneumatic gauging

E. change of capacitance.

Explanation: