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 19 of 35

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Q181.
Bourdon gauges are used for measuring pressure (kg/cm² )

a.

< atmospheric

b.

> 2 (gauge)

c.

< 2 (gauge)

d.

> 10 (absolute)

Discuss
Answer: (b).> 2 (gauge)
Q182.
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in

a.

light intensity

b.

current

c.

flux density

d.

voltage

Discuss
Answer: (a).light intensity
Q183.
A typical example of a physical system with under damped characteristic is a

a.

U-tube manometer.

b.

spring loaded diaphragm valve.

c.

CSTR with first order reaction.

d.

thermocouple kept immersed in a liquid filled thermowell.

Discuss
Answer: (b).spring loaded diaphragm valve.
Q184.
An aneroid barometer measures the __________ pressure.

a.

atmospheric

b.

absolute

c.

vacuum

d.

gage

Discuss
Answer: (b).absolute
Q185.
A bolometer is

a.

used for the measurement of thermal radiation.

b.

an element which senses optical input and delivers thermal output.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q186.
Thermal wells are used in the temperature measurement to

a.

guard against corrosive and oxidising action on thermocouple materials

b.

reduce measuring lag.

c.

increase the fidelity.

d.

increase the sensitivity.

Discuss
Answer: (a).guard against corrosive and oxidising action on thermocouple materials
Q187.
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by

a.

reducing value of Kc.

b.

introducing integral control.

c.

introducing derivative control.

d.

none of the above.

Discuss
Answer: (b).introducing integral control.
Q188.
When a bare thermocouple is covered by a protective sheath, the response becomes

a.

faster and oscillatory.

b.

faster and non-oscillatory.

c.

slower and oscillatory.

d.

slower and non-oscillatory.

Discuss
Answer: (d).slower and non-oscillatory.
Q189.
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple ?

a.

0.1

b.

3

c.

13

d.

29

Discuss
Answer: (c).13
Q190.
Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C.

a.

< 100

b.

< 0

c.

> 0

d.

> 800

Discuss
Answer: (b).< 0
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