Process Control and Instrumentation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Process Control and Instrumentation, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Process Control and Instrumentation MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Process Control and Instrumentation mcq questions that explore various aspects of Process Control and Instrumentation problems. Each MCQ is crafted to challenge your understanding of Process Control and Instrumentation principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Process Control and Instrumentation MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Process Control and Instrumentation. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Process Control and Instrumentation knowledge to the test? Let's get started with our carefully curated MCQs!

Process Control and Instrumentation MCQs | Page 13 of 35

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Q121.
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'.

a.

Celcius

b.

Rankine

c.

Reumur

d.

Farenhite

Discuss
Answer: (c).Reumur
Q122.
Dead zone is the

a.

same as time constant.

b.

same as transportation lag.

c.

maximum change in the variable that does not change the reading of the instrument.

d.

none of these.

Discuss
Answer: (c).maximum change in the variable that does not change the reading of the instrument.
Q123.
Thermocouple in a thermal well behaves as a true

a.

first order system.

b.

second order system (overdamped).

c.

multiple first order system.

d.

second order system (underdamped).

Discuss
Answer: (c).multiple first order system.
Q124.
Bode diagram is a plot of

a.

log (AR) vs. log (f) and (Φ) vs. log (f).

b.

log (AR) vs. f and log Φ vs.f.

c.

AR vs. log (f) and Φ vs. log (f).

d.

none of these.

Discuss
Answer: (a).log (AR) vs. log (f) and (Φ) vs. log (f).
Q125.
Working principle of disappearing filament type optical pyrometer is based on the

a.

Wien's law

b.

Seebeck effect

c.

Kirchoff's law

d.

Peltier effect

Discuss
Answer: (a).Wien's law
Q126.
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.

a.

no change

b.

decrease

c.

increase

d.

exponential decrease

Discuss
Answer: (c).increase
Q127.
Measurement of sub-zero Celcius temperature in industry is done most commonly by

a.

thermocouples

b.

resistance thermometers

c.

gas thermometers

d.

bi-metallic thermometers

Discuss
Answer: (b).resistance thermometers
Q128.
Use of I-control along with P-control facilitates

a.

elimination of offset

b.

reduction of offset

c.

reduction of stability time

d.

none of these

Discuss
Answer: (a).elimination of offset
Q129.
Turbine flow meters are suitable for

a.

very limited flow ranges.

b.

cryogenic flow measurements.

c.

aerospace and in air borne applications.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q130.
Liquid discharge from a tank or reservoir can not be measured by

a.

orificemeters

b.

weirs

c.

mouthpieces

d.

notches

Discuss
Answer: (a).orificemeters
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