This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why do direct spark ignition systems use flame rectification for flame safety? A) flame ... (Read 103 times)

geodog55

  • Hero Member
  • *****
  • Posts: 530
on: Jul 27, 2018
Why do direct spark ignition systems use flame rectification for flame safety?
 
  A) flame rectification is much faster than anything that relies on heat
  B) the flame rod can double as a thermocouple for older furnaces
  C) flame rectification is less complicated than using a thermocouple
  D) flame rectification is the oldest flame producing technology

Question 2

How does the presence of 7 to 9 percent CO2 in flue gas reflect heating unit performance?
 
  A) It indicates a possible gas leak. B) It indicates that the unit is running efficiently.
  C) It indicates the level of CO2 is neutral. D) It indicates a lack of efficiency.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

britb2u

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


geodog55

  • Member
  • Posts: 530
Reply 2 on: Jul 27, 2018
Wow, this really help

cici

  • Member
  • Posts: 325
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Direct Fist Percussion of Left Kidney Direct Fist Percussion of Left Kidney
Since 1991, General Motors engines have been equipped with slightly (1/8 inch or 3 mm) longer spark ... Since 1991, General Motors engines have been equipped with slightly (1/8 inch or 3 mm) longer spark ...
Major Wind Systems: Monsoons Major Wind Systems: Monsoons
Major Wind Systems: Sea and Land Breezes Major Wind Systems: Sea and Land Breezes
Systems of the Human Body Systems of the Human Body
Accounting Information Systems, 4th Edition Accounting Information Systems, 4th Edition
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library