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 26 of 35

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Q251.
Polarisation of light forms the working principle of a

a.

polarimeter

b.

polarograph

c.

chromatograph

d.

spectrometer

Discuss
Answer: (a).polarimeter
Q252.
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same

a.

temperature measuring range (- 40°C to 450°C).

b.

accuracy (± 1% of span).

c.

speed of response.

d.

all a, b & c.

Discuss
Answer: (d).all a, b & c.
Q253.
Time constant is the

a.

time taken by the controlled variable to reach 63.2% of its full change.

b.

same as transportation lag.

c.

same as dead time.

d.

time required by the measured variable to reach 63.2% of its ultimate change.

Discuss
Answer: (a).time taken by the controlled variable to reach 63.2% of its full change.
Q254.
Mercury manometer (U-tube type) exemplifies a __________ order system.

a.

zero

b.

first

c.

second

d.

third

Discuss
Answer: (c).second
Q255.
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is

a.

chromel-alumel

b.

iron-constantan

c.

platinum-rhodium

d.

platinum-platinum+rhyodium

Discuss
Answer: (b).iron-constantan
Q256.
Bode stability method uses __________ loop transfer function.

a.

open

b.

closed

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).open
Q257.
Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?

a.

Nickel

b.

Brass

c.

Chromel

d.

Invar

Discuss
Answer: (b).Brass
Q258.
The term analogous to voltage in a single tank system is the

a.

heat content of the system.

b.

liquid volume in the tank.

c.

flow rate.

d.

level of liquid.

Discuss
Answer: (d).level of liquid.
Q259.
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

a.

load

b.

manipulated

c.

controlled

d.

none of these

Discuss
Answer: (c).controlled
Q260.
Mcleoid gauge is used to measure the

a.

point velocity

b.

flow rate

c.

vacuum

d.

pressure

Discuss
Answer: (c).vacuum
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