Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Ionization of Gases Questions and Answers
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Multiple Choice Questions > Ionization of Gases Questions and Answers

Ionization of Gases Questions and Answers

Last updated: November 27, 2021 5:38 pm
Editorial Staff
Multiple Choice Questions
No Comments
Share
5 Min Read
SHARE

Ionization of Gases Questions and Answers

1. Gases emit radiation under which of the following conditions which can be used for determination of gases?

a) When mixed with other gases
b) When kept at suitable temperature
c) With sufficient electrical excitation and at suitable pressures
d) When exposed to radiation

Answer: c

Explanation: Gases emit radiation with sufficient electrical excitation and at suitable pressures. Gases emit radiation in different ways. It can be in the form of spark, arc or glow discharge in different parts of radiation spectrum.

2. Which of the following measuring technique is utilized for measuring nitrogen?

a) By using a method based on gas density
b) By using paramagnetic analyzers
c) By using magnetic wind instruments
d) By using a photospectrometer where a gas sample is analysed and detected with a photocell

Answer: d

Explanation: By using a photospectrometer gas sample is analysed, for measuring nitrogen. It is then selectively filtered by using a photocell which provides an appropriate electric signal.

3. The characteristic emission of which colour, when discharge takes place in a low pressure chamber containing gas sample, will indicate the presence of nitrogen while using photospectrometer?

a) Purple
b) Blue
c) Pink
d) Green

Answer: a

Explanation: The characteristic emission of purple colour, when discharge takes place in a low pressure chamber containing gas sample, will indicate the presence of nitrogen while using photospectrometer. These are usually employed in medical applications.

4. Sample rates of nitrogen meter can be adjusted by doing which of the following?

a) By modifying the amplifier
b) With the help of the needle valve
c) By modifying the detector
d) By changing chopper frequency

Answer: b

Explanation: Sample rates of nitrogen meter can be adjusted with the help of needle valve. Modern nitrogen analyzers have digital displays.

5. Which of the following is the normal sampling rate used in nitrogen meters?

a) 13 ml/min
b) 33 ml/min
c) 3 ml/min
d) 43 ml/min

Answer: c

Explanation: The normal sampling rate used in nitrogen meters is 3 ml/min. Modern nitrogen analyzers have digital displays.

6. Nitrogen meters are calibrated for which of the following to measure nitrogen?

a) Mixture of nitrogen and air
b) Water saturated mixture of nitrogen and oxygen
c) Mixture of nitrogen and hydrogen
d) Nitrogen

Answer: b

Explanation: Nitrogen meters are calibrated for water saturated mixture of nitrogen and oxygen. Hence, this calibration cannot be used for dry gases.

7. Why is nitrogen meters generally not calibrated for dry gases while measuring nitrogen?

a) It causes error
b) Range decreases
c) Reading tend to be non-linear
d) It cannot be measured

Answer: a

Explanation: Nitrogen meters are generally not calibrated for dry gases because it will lead to error in the reading. The error will be upto 2%.

8. In which of the following ways can nitrogen be calibrated for dry gases?

a) By modifying the amplifier
b) By adjusting the needle valve
c) By modifying the detector
d) By changing chopper frequency

Answer: b

Explanation: Nitrogen can be calibrated for dry gases by adjusting the needle valve. In this way, the error will be compensated.

9. The voltage required for striking the discharge in the presence of nitrogen is 1500V.

a) True
b) False

Answer: a

Explanation: The voltage required for striking the discharge in the presence of nitrogen is 1500V. This voltage is generated using a DC-DC converter.

10. The light output from the discharge tube is interrupted by means of a rotating slotted disc.

a) True
b) False

Answer: a

Explanation: The light output from the discharge tube is interrupted by means of a rotating slotted disc. Hence, a chopped output is obtained.

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Stability of Nonlinear System
Concept of Stability in Control Systems
Tuning of PID Controllers
Objective Questions of Building Fire and Gas Detectors
Thermal Conductivity Analyzers Questions & Answers
Top 100 Power Plant Engineering Objective Questions & Answers
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

X-Ray Fluorescence Spectrometry Questions and Answers
Construction of Phase -Trajectories
Pneumatic Systems Objective Questions
pH Measurement Questions & Answers
Optimal Control Problems – Part 2
Transfer Functions Objective Questions
Measurement and Instrumentation Objective Questions – Part 3
Chromatography Questions & Answers

Keep Learning

Pressure Measurement Multiple Choice Questions

Frequency Response MCQ

Frequency Response MCQ

Time Response Analysis

Steady-state Errors & Error Constants

Chromatography Questions & Answers

Column Efficiency and Column Resolution Questions and Answers

Level Measurement Objective Questions

Level and Density Measurement Objective Questions

Temperature and Humidity Objective Questions

Temperature and Humidity Objective Questions

Time Response Analysis

Time Response of First Order Systems Objective Questions

Mathematical Models of Physical Systems

Signal Flow Graphs Objective Questions

Learn More

Sling Psychrometer Principle

Sling Psychrometer Principle

Power Electronics Objective Questions

Single-Phase Full Wave AC-DC Converter Test

Servo Operated Manometer Objective Questions

Servo Operated Manometer Objective Questions

Principle of Operation of PLC

Principle of Operation of PLC

Pipeline Pig Detector

What are Non-Intrusive Pig Signallers or Pig Detectors?

Electrical Machines Short Answers

Electrical Machines Short Answers

Limit Switches Wiring

Draw Limit Switch Symbol ?

PID block from the PLC library

How to Configure PID Controller in Various Schneider PLCs?

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?