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Author Question: A pneumatic controller that increases the pressure of its branch line when air temperature in the ... (Read 70 times)

tiffannnnyyyyyy

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on: Jul 24, 2018
A pneumatic controller that increases the pressure of its branch line when air temperature in the conditioned
  space goes up is called a(n) _____.
 
  a. direct-acting thermostat
  b. reverse-acting thermostat
  c. graduate thermometer
  d. E-P relay

Question 2

Why is 24V used in control circuits?
 
  a. Components are easy to install.
  b. Alternating current is not needed.
  c. It allows battery back-up.
  d. Electric shocks are eliminated.


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millet

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

a

Answer to Question 2

a


tiffannnnyyyyyy

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Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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