This topic contains a solution. Click here to go to the answer

Author Question: The four categories of gas-fired furnaces are based on: A) Efficiency. B) Flue gas temperature ... (Read 97 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
The four categories of gas-fired furnaces are based on:
 
  A) Efficiency. B) Flue gas temperature and pressure.
  C) Firing rate. D) Category of gas being burned.

Question 2

What is the advantage of using multiple compressors on a supermarket rack system?
 
  A) System capacity can match refrigeration loads, which vary over a wide range.
  B) Extra compressors provide backup in case one quits working.
  C) Using multiple parallel compressors makes the use of multiple refrigerants possible.
  D) The compressors can operate at a higher compression ratio as a parallel group.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kxciann

  • Sr. Member
  • ****
  • Posts: 356
Answer to Question 1

B

Answer to Question 2

A




jon_i

  • Member
  • Posts: 549
Reply 2 on: Jul 24, 2018
:D TYSM


amandalm

  • Member
  • Posts: 306
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

For a complete list of videos, visit our video library