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 59 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
Great answer, keep it coming :)

vickybb89

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

(a) Mechanisms of action for direct cholinergic agonists. Direct cholinergic agonists can act by two ... (a) Mechanisms of action for direct cholinergic agonists. Direct cholinergic agonists can act by two ...
A point-type ignition system showing the distributor cam which opens the points A point-type ignition system showing the distributor cam which opens the points
A spark plug from an engine that had a blown head gasket. The white deposits could be from the ... A spark plug from an engine that had a blown head gasket. The white deposits could be from the ...
Management Information Systems: Managing the Digital Firm, 15th Edition Management Information Systems: Managing the Digital Firm, 15th Edition
Object Oriented Systems Analysis and Design Object Oriented Systems Analysis and Design
All human organ systems and their functions (Part 1) All human organ systems and their functions (Part 1)
Video: Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library