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vgrdiver vgrdiver
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Posts: 527
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4 years ago
Feet of water is a measure of _____.
 
  a. head pressure
  b. column pressure
  c. dynamic pressure
  d. pipe friction



[Ques. 2] How many wraps of duct tape must be made around a flexible duct when it is attached to a round collar?
 
  a. 1
  b. 2
  c. 3
  d. 4



[Ques. 3] An advantage of using galvanized sheet metal over other materials when assembling a duct system is it
  _____.
 
  a. is very quiet
  b. is resistant to corrosion
  c. is the least expensive
  d. exhibits the lowest heat loss



[Ques. 4] How much additional length must be added to 1 12 - inch thick insulation being wrapped around a rectangular duct?
 
  a. 6 inches
  b. 8 inches
  c. 10 inches
  d. 12 inches



[Ques. 5] In which application is fibrous glass duct liner not approved?
 
  a. A residence
  b. A department store
  c. Hospital rooms
  d. A public building
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mburthaymburthay
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Posts: 380
Rep: 6 0
4 years ago
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1)  a

2)  b

3)  b

4)  b

5)  c
1

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