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Author Question: Which of the following control devices is often used in both a primary and a secondary control role? ... (Read 82 times)

yoooooman

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on: Jul 24, 2018
Which of the following control devices is often used in both a primary and a secondary control role?
 
  a. Pressure switches
  b. Humidistats
  c. Rupture disks
  d. Condenser water valves

Question 2

Which of the following metering devices responds to changes in the superheat of the refrigerant vapor
  leaving the evaporator?
 
  a. Low-side float valve
  b. High-side float valve
  c. Automatic expansion valve
  d. Thermostatic expansion valve


ricroger

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Reply #1 on: Jul 24, 2018
Answer to Question 1

a

Answer to Question 2

d


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