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lorenlauu lorenlauu
wrote...
Posts: 512
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6 years ago
Slightly opening a valve is called:
 
  A) Breaking the valve. B) Cracking the valve.
  C) Hedging the valve. D) Testing the valve.

 Q. 2

Heat exchangers used in steam systems are usually _____.
 
  a. water-to-steam
  b. steam-to-air
  c. steam-to-water
  d. steam-to-steam

 Q. 3

Before a steel plate is used for practice welding, mill scale on the plate is removed because the DCEN used in
  GTAW has little or no _____.
 
  a. electrical conductance
  b. flux resistance
  c. arcing ability
  d. cleaning action
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Replies
wrote...
6 years ago
Ans. to #1

B

Ans. to #2

c

Ans. to #3

d
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