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Author Question: The four categories of gas-fired furnaces are based on: A) Efficiency. B) Flue gas temperature ... (Read 48 times)

jon_i

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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.


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kxciann

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Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

A


jon_i

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Reply 2 on: Jul 24, 2018
Excellent

softEldritch

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Reply 3 on: Yesterday
Gracias!

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