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 23 of 35

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Q221.
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

a.

-1

b.

0

c.

1

d.

∞

Discuss
Answer: (d).∞
Q222.
__________ type of element is normally not used in the bimetallic thermometers.

a.

Flat spiral

b.

Bourdon tube

c.

Single helix

d.

Multiple helix

Discuss
Answer: (b).Bourdon tube
Q223.
Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as

a.

8, 0.6, 0.08

b.

12, 0.6, 0.12

c.

8, 0.6, 0.12

d.

12, 0.4, 0.08

Discuss
Answer: (b).12, 0.6, 0.12
Q224.
Process degree of freedom indicates __________ number of controllers to be used.

a.

the maximum

b.

the minimum

c.

both maximum and the minimum

d.

nothing about the

Discuss
Answer: (a).the maximum
Q225.
Characteristic equation is the denominator of __________ loop transfer function.

a.

open

b.

closed

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).closed
Q226.
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.

a.

radiation

b.

optical

c.

photoelectric

d.

none of these

Discuss
Answer: (c).photoelectric
Q227.
Polarograph is meant for the analysis of

a.

gaseous mixture

b.

miscible liquids

c.

solids

d.

isotopes

Discuss
Answer: (c).solids
Q228.
Which of the following fluid flow measuring devices can measure the largest flow rate ?

a.

V-notch

b.

Rotameter

c.

Orificemeter

d.

Weir

Discuss
Answer: (d).Weir
Q229.
Gas analysis is commonly done using the

a.

thermal conductivity cell

b.

X-ray diffraction

c.

mass spectrometer

d.

emission spectrometer

Discuss
Answer: (a).thermal conductivity cell
Q230.
The open loop transfer function of a control system is KR / (1+TS) . This represents

a.

a first order system.

b.

dead time system.

c.

a first order time lag.

d.

a second order system.

Discuss
Answer: (a).a first order system.
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