When changing a low-voltage transformer, the service technician ...

[panfilo]

When changing a low-voltage transformer, the service technician should:
 
  A) Use a replacement transformer with a higher VA rating to make it last longer.
  B) Check all low-voltage controls for shorts and grounds.
  C) Use a replacement transformer with a higher-voltage primary winding to make it last longer.
  D) Temporarily short across the secondary side of the transformer to test its output.

Question 2

What kind of expansion tank must be installed above the highest terminal unit?
 
  A) Diaphragm type B) Closed type
  C) Pressure-relief type D) Open type

[abro1885]

Answer to Question 1

B

Answer to Question 2

D

[panfilo]

Excellent

[okolip]

Gracias!