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 3 of 35

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Q21.
The transfer function of a first order system is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q22.
The transfer function of a pure dead time system with dead time ฯ„d is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q23.
Which of following error integral is considered as the best criterion in controller settings ?

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q24.
Pick out the symbol for "locally mounted instrument" in instrumentation diagram.

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q25.
Block diagram of a simple standard control system is shown below in the figure. Which of the following statement about the above control system is wrong ?

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q26.
Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop.

a.

Tank 1

b.

Tank 2

c.

Tank 3

d.

Tank 4

Discuss
Answer: (c).Tank 3
Q27.
__________ is undesirable in thermocouples used in industries.

a.

Linear relation of emf to temperature

b.

Corrosion resistance

c.

Oxidation resistance

d.

Non-linear relation of emf to temperature

Discuss
Answer: (d).Non-linear relation of emf to temperature
Q28.
Select the correct statement from the following.

a.

The frequency response of a pure capacity process is unbounded.

b.

The phase lag of a pure time delay system decreases with increasing frequency.

c.

The amplitude ratio of a pure capacity process is inversely proportional to frequency.

d.

The amplitude ratio of a pure time delay system increases with frequency.

Discuss
Answer: (c).The amplitude ratio of a pure capacity process is inversely proportional to frequency.
Q29.
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

a.

2/s²

b.

4/s²

c.

2/s³

d.

4/s³

Discuss
Answer: (d).4/s³
Q30.
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

a.

thermocouple

b.

reistance thermometer

c.

mercury in glass thermometer

d.

vapor pressure thermometer

Discuss
Answer: (a).thermocouple
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