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 22 of 35

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Q211.
Very low pressure is expressed in microns(ฮผ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

a.

0.0001

b.

0.001

c.

0.01

d.

0.1

Discuss
Answer: (b).0.001
Q212.
Which of the following is not a second order instrument ?

a.

Mercury in glass thermometer with covering.

b.

Bare mercury in glass thermometer.

c.

Pressure gauge with one bellow, two tubes and a tank.

d.

None of these.

Discuss
Answer: (b).Bare mercury in glass thermometer.
Q213.
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

a.

water

b.

carbon tetrachloride

c.

paraffin

d.

ethylene glycol

Discuss
Answer: (c).paraffin
Q214.
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.

a.

50

b.

100

c.

10

d.

1

Discuss
Answer: (d).1
Q215.
A simple pitot tube measures the

a.

average velocity

b.

maximum velocity

c.

point velocity

d.

static pressure

Discuss
Answer: (d).static pressure
Q216.
For a feed back control system to be stable, the

a.

roots of the characteristic equation should be real.

b.

poles of the closed loop transfer function should lie in the left half of the complex plane.

c.

Bode plots of the corresponding open loop transfer function should monotoni-cally decrease.

d.

poles of the closed loop transfer function should lie in the right half of the complex plane.

Discuss
Answer: (b).poles of the closed loop transfer function should lie in the left half of the complex plane.
Q217.
__________ is the static characteristics of an instrument,

a.

Response

b.

Tine lag

c.

Drift

d.

dynamic error

Discuss
Answer: (c).Drift
Q218.
Phase lag of the frequency response of a second order system to a sinusoidal forcing function

a.

is 30°

b.

is 90° at the most

c.

approaches 180° asymptotically

d.

is 120°

Discuss
Answer: (c).approaches 180° asymptotically
Q219.
Dead zone in an instrument must be less than __________ percent of the scale.

a.

0.2

b.

1.5

c.

4

d.

8

Discuss
Answer: (a).0.2
Q220.
Emission spectroscopy is used for

a.

solids and metal analysis.

b.

determining water purity.

c.

determination of COโ‚‚ in gases.

d.

NOโ‚“ determination.

Discuss
Answer: (a).solids and metal analysis.
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