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 32 of 35

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Q311.
Platinum resistance thermometer is the international standard for temperature measurement between

a.

triple point of hydrogen and freezing point of antimony

b.

13.81°K to 903.9°K

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q312.
For measuring the temperature of a red hot furnace, which is the most suitable instrument ?

a.

Platinum resistance thermometer

b.

Thermocouple

c.

Optical pyrometer

d.

Bimetallic thermometer

Discuss
Answer: (c).Optical pyrometer
Q313.
Continuous measurement of specific gravity of a liquid is done by

a.

hydrometer

b.

contact-type electric indicators

c.

displacement meter

d.

both (a) and (c)

Discuss
Answer: (d).both (a) and (c)
Q314.
Stroboscope is used for the measurement of

a.

rpm of a flywheel

b.

frequency of light

c.

depression of freezing point

d.

liquid level under pressure

Discuss
Answer: (a).rpm of a flywheel
Q315.
In second order underdamped system,

a.

decay ratio = overshoot

b.

decay ratio = (overshoot)²

c.

overshoot increases for increasing damping co-efficient.

d.

large damping co-efficient means smaller damping.

Discuss
Answer: (b).decay ratio = (overshoot)²
Q316.
Dome temperature of blast furnace stove is most accurately measured by a

a.

radiation pyrometer.

b.

platinum-platinum/rhodium ther-mocuple.

c.

iron-constantan thermocouple.

d.

platinum resistance thermometer.

Discuss
Answer: (b).platinum-platinum/rhodium ther-mocuple.
Q317.
Phase lag of the sinusoidal response of a first order system is

a.

120°

b.

30°

c.

180°

d.

90°

Discuss
Answer: (d).90°
Q318.
Continuous measurement of moisture content of paper in paper industry is done by measuring the

a.

thermal conductivity through the paper

b.

electrical resistance through the paper

c.

magnetic susceptibility

d.

none of these

Discuss
Answer: (b).electrical resistance through the paper
Q319.
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

a.

steel

b.

vycor (a glass)

c.

nichrome

d.

inconel

Discuss
Answer: (b).vycor (a glass)
Q320.
On-off control which is a special case of proportional control, has a band width of about __________ percent.

a.

100

b.

75

c.

25

d.

0

Discuss
Answer: (d).0
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