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teilour teilour
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Posts: 465
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6 years ago
A system using R-404a has an evaporation temperature of 0F. If the line length is 100 ft. and the system needs a capacity of 2 tons, what size line should be used?
 
  A) 7/8 in B) 3/4 in C) 1-1/8 in D) 5/8 in

 Q. 2

Which of these conditions can occur when the top of the chimney is lower than a surrounding structure?
 
  a. Downdraft
  b. Obstruction
  c. Whistling noise
  d. Overload of the burner motor

 Q. 3

The interrupting rating of an FH-type circuit breaker is _____.
 
  a. 5,000A
  b. 10,000A
  c. 30,000A
  d. 65,000A
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wrote...
#1
6 years ago
Ans. to #1

A

Ans. to #2

a

Ans. to #3

d
teilour Author
wrote...
#2
6 years ago
Thank you
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