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

Author Question: The four categories of gas-fired furnaces are based on: A) Efficiency. B) Flue gas temperature ... (Read 108 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
on: Jul 24, 2018
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
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

A


jon_i

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

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Hospice care is based on the belief that when death is inevitable, professional caregivers should ... Hospice care is based on the belief that when death is inevitable, professional caregivers should ...
The level in the coolant recovery system raises and lowers with engine temperature. The level in the coolant recovery system raises and lowers with engine temperature.
The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ... The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ...
Jan-Dec Global Mean Temperature Over Land and Ocean Jan-Dec Global Mean Temperature Over Land and Ocean
Nonlinear increase in saturation vapor pressure with increase in temperature. Nonlinear increase in saturation vapor pressure with increase in temperature.
For a particular cell based on the reaction:3 AgCl(s) + Al(s) → 3 Ag(s) + Al3+(aq) + 3 ... For a particular cell based on the reaction:3 AgCl(s) + Al(s) → 3 Ag(s) + Al3+(aq) + 3 ...
Video: Acid-base imbalances - respiratory acidosis and alkalosis

For a complete list of videos, visit our video library