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

Author Question: What is the difference between primary air and secondary air? A) Primary air is used for the main ... (Read 74 times)

lbcchick

  • Hero Member
  • *****
  • Posts: 550
on: Jul 24, 2018
What is the difference between primary air and secondary air?
 
  A) Primary air is used for the main burner and secondary air is used for the auxiliary burners.
  B) Primary air is mixed with the gas before ignition and secondary air is drawn in after ignition.
  C) Secondary air is only used if the primary air source is depleted.
  D) Primary air is used with natural gas and secondary air is used for LP gas.

Question 2

When an air handler has both a DX cooling coil and a hot water heating coil, which coil is located first in the airstream?
 
  A) The two coils are in different airstreams.
  B) The DX cooling coil
  C) The hot water heating coil
  D) The air does not travel over the hot water heating coil.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akemokai

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

C


lbcchick

  • Member
  • Posts: 550
Reply 2 on: Jul 24, 2018
Gracias!

mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

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

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Fires Commonly Are Major Secondary Effects Fires Commonly Are Major Secondary Effects
Primary Visual Cortex Primary Visual Cortex
Examples of Primary (Congenital) Forms of Immunodeficiency Examples of Primary (Congenital) Forms of Immunodeficiency
The Main Macromolecules in Cells The Main Macromolecules in Cells
Sheridan Motors is a car dealership that would like to investigate if there is a difference in ... Sheridan Motors is a car dealership that would like to investigate if there is a difference in ...
Main body cavities that hold human organs Main body cavities that hold human organs
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library