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Ojs123 Ojs123
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6 years ago
A technician checks the resistance of the primary winding on a transformer and reads 0. 2 ohms. This tells the technician that:
 
  A) The transformer should be rewired to use the secondary winding.
  B) The primary winding is shorted.
  C) The primary winding is open.
  D) The primary winding is good.

 Q. 2

Why might leak testing with nitrogen be preferable to using R-22?
 
  A) Environmental concerns B) System safety
  C) Post-detection clean-up D) Refrigerant recovery

 Q. 3

In sine wave terminology, the average value is _____.
 
  a. 0.637  peak value
  b. 0.707  peak value
  c. 3.14  peak value
  d. 6.370  peak value
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mas0375mas0375
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#1
6 years ago
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Ojs123 Author
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#2
6 years ago
Happy Dummy I'm impressed
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