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 15 of 35

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Q141.
The amplitude ratio for the sinusoidal response of a __________ is 1.

a.

first order system

b.

second order system

c.

transportation lag

d.

none of these

Discuss
Answer: (c).transportation lag
Q142.
Which of the following is not a mechanical pressure sensing element ?

a.

Bellows

b.

Diaphragm

c.

Bourdon tube

d.

U-tube

Discuss
Answer: (d).U-tube
Q143.
__________ are analysed using a polarograph.

a.

Isotonic solutions

b.

Solids

c.

Liquids

d.

Gases

Discuss
Answer: (b).Solids
Q144.
Which of the following judges the accuracy of an instrument ?

a.

Dead zone

b.

Drift

c.

Static error

d.

None of these

Discuss
Answer: (c).Static error
Q145.
On-off controllers are normally used for

a.

low loads

b.

temperature changes

c.

flow rate changes

d.

none of these

Discuss
Answer: (a).low loads
Q146.
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

a.

low thermal conductivity.

b.

low electrical conductivity.

c.

high viscosity index.

d.

low flash point.

Discuss
Answer: (b).low electrical conductivity.
Q147.
Starting temperature of optical radiation pyrometer is __________ °C.

a.

800

b.

400

c.

1200

d.

1500

Discuss
Answer: (a).800
Q148.
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

a.

gage glass

b.

external float gage

c.

differential pressure gage

d.

none of these

Discuss
Answer: (c).differential pressure gage
Q149.
Which of the systems having following transfer functions is stable?

a.

1/(s²+ 2)

b.

1/(s²-2s + 3)

c.

1/(s² + 2s + 2)

d.

exp(-20s)/(s² + 2s-1)

Discuss
Answer: (c).1/(s² + 2s + 2)
Q150.
What is the dynamic error in a critically damped second order instrument for a ramp input (AT) ?

a.

0.5 AT

b.

2 AT

c.

√AT

d.

1.5 AT

Discuss
Answer: (b).2 AT
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