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 141 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?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

A comparison of electron and light microscope technologies A comparison of electron and light microscope technologies
Light-mantled Albatrosses regularly dive to feed, and can dive to below 12 m. Light-mantled Albatrosses regularly dive to feed, and can dive to below 12 m.
The Modern View: Midlatitude Cyclones and Conveyor Belts The Modern View: Midlatitude Cyclones and Conveyor Belts
Dash Warning Lights: Oil (Engine) Light Dash Warning Lights: Oil (Engine) Light
Modern Hydroelectric Power Uses Modern Hydroelectric Power Uses
Light palpation of abdomen Light palpation of abdomen
Video: SNP Polymorphysim Microarray Chip - How to Test a Person's DNA

For a complete list of videos, visit our video library