Author Question: A technician checks the resistance of the primary winding on a transformer and reads 0. 2 ohms. This ... (Read 85 times)

serike · **on:** Jul 26, 2018

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.

Question 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