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 21 of 35

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Q201.
A pyranometer is an instrument used for measuring the

a.

beam radiation.

b.

global radiation.

c.

bright sunshine period.

d.

none of these.

Discuss
Answer: (b).global radiation.
Q202.
All the thermocouples used for temperature measurement use dissimilar metal

a.

strips

b.

bars

c.

wires

d.

beads

Discuss
Answer: (c).wires
Q203.
The inverse Laplace transform of the function f(s) = 1 / S(1+S) is

a.

1 + eแต—

b.

1 - eแต—

c.

1 + eแต—

d.

1 - eโปแต—

Discuss
Answer: (d).1 - eโปแต—
Q204.
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ?

a.

COโ‚‚

b.

Nโ‚‚

c.

Oโ‚‚

d.

CO

Discuss
Answer: (a).COโ‚‚
Q205.
Emf generated in a thermocouple depends on the temperature

a.

of cold junction only.

b.

of hot junction only.

c.

difference between hot and cold junctions.

d.

difference between cold junction and atmospheric temperature.

Discuss
Answer: (c).difference between hot and cold junctions.
Q206.
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

a.

increase of pressure

b.

increase of thermal conductivity

c.

volumetric expansion

d.

differential linear expansion

Discuss
Answer: (c).volumetric expansion
Q207.
A system with a double pole at the origin is unstable since the corresponding term in the time domain

a.

is a constant.

b.

grows exponentially with time.

c.

grows linearly with time.

d.

decays linearly with time.

Discuss
Answer: (c).grows linearly with time.
Q208.
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

a.

air

b.

a metal powder or graphite

c.

oil

d.

mercury

Discuss
Answer: (a).air
Q209.
In a second order under damped system, the

a.

time required for the response of first reach its ultimate value is called the response time.

b.

overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e.

c.

decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot.

d.

None of the above

Discuss
Answer: (b).overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e.
Q210.
In an exothermic chemical reactor, the manipulated variable is the flow rate of

a.

coolant

b.

reactants

c.

product

d.

none of these

Discuss
Answer: (a).coolant
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