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

Author Question: Modern residential oil furnaces sense the flames using: A) Ultraviolet light sensors. B) A ... (Read 71 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
on: Jul 24, 2018
Modern residential oil furnaces sense the flames using:
 
  A) Ultraviolet light sensors. B) A thermal sensing stack switch.
  C) Flame rectification. D) A cadmium sulfide cell.

Question 2

MERV filter rating system:
 
  A) Compares the airflow resistance of different filters when fully loaded.
  B) Compares the overall arrestance value of all sizes of particles.
  C) Compares the airflow resistance of different filters when they are new.
  D) Compares the arrestance value of 12 different ranges of particle size.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kiamars2010

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

D


TFauchery

  • Hero Member
  • *****
  • Posts: 500
Reply #2 on: Jul 24, 2018
Thanks


kiamars2010

  • Sr. Member
  • ****
  • Posts: 341
Reply #3 on: Jul 24, 2018
Welcome :)


« previous next »
 

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

moon light moon light
The sense of smell. The sense of smell.
Use dye specifically made for coolant when checking for leaks using a black light. Use dye specifically made for coolant when checking for leaks using a black light.
Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ... Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ...
This Toyota cap has a warning—the check engine light will come on if not tightened until one ... This Toyota cap has a warning—the check engine light will come on if not tightened until one ...
Modern Massage Therapy Timeline Modern Massage Therapy Timeline
Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

For a complete list of videos, visit our video library