Which part of an analog flue gas instrument may alter readings ...

[yoroshambo]

Which part of an analog flue gas instrument may alter readings because of voltage and current issues?
 
  A) The selector switch B) The batteries
  C) The circuit board D) The pump

Question 2

On a commercial refrigeration system with electric defrost, what does the evaporator fan do during the defrost cycle?
 
  A) It runs backwards to reverse the airflow.
  B) It cycles like it normally would.
  C) It operates to circulate warm air over the evaporator coils.
  D) It shuts off.

[jlaineee]

Answer to Question 1

B

Answer to Question 2

C

[yoroshambo]

TYSM

[nathang24]

Thanks for the timely response, appreciate it