The unit of measure for the electrical pressure forcing electrical energy through a conductor is the ____________________.
Fill in the blank(s) with the appropriate word(s).
volt
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What pressure relief device should be used in gas service?
A. Safety valves B. Relief valves C. Safety relief valves D. Rupture discs
What is the ideal flow type in a heat exchanger?
A) Laminar B) Turbulent C) Parallel D) Cross flow
Which statement about mechanical insulation working conditions is true?
a. You cannot be required to work in confined spaces. b. You will work alongside plumbers and HVAC contractors. c. Most of your work will be performed in an office at a desk. d. Insulation is not installed during periods of high wind.
Most gas furnaces that have been installed from the past 10 years to current installations use an electronic control board, usually called a(n) ____________________ module, which supervises the operation of the entire gas furnace.
Fill in the blank(s) with the appropriate word(s).