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 147 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?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

When horses lie down to sleep, others in the herd remain standing, awake or in a light doze, keeping When horses lie down to sleep, others in the herd remain standing, awake or in a light doze, keeping
Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode
Color mixtures of refracted light—additive process. Color mixtures of refracted light—additive process.
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
Apply light tapotement on the head. Tapping lightly with the fingertips works well for this purpose. Apply light tapotement on the head. Tapping lightly with the fingertips works well for this purpose.
Video: The Hypothalamus: The Body's Thermostat (Human Thermostat)

For a complete list of videos, visit our video library