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 103 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!

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Alkaloids as secondary metabolites Alkaloids as secondary metabolites
Brachial Plexus drawing plus the difference in the forearm Brachial Plexus drawing plus the difference in the forearm
The difference between a human and an ape. The difference between a human and an ape.
William Kentridge, History of the Main Complaint. William Kentridge, History of the Main Complaint.
Primary Active Transport Primary Active Transport
Female Reproductive System - Secondary follicle Female Reproductive System - Secondary follicle
Video: HDL (high density lipoprotein)

For a complete list of videos, visit our video library