The return duct portion of an air handling system never needs to be insulated.
Answer the following statement true (T) or false (F)
False
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What is the ampacity of a water heater with a nameplate rating of 7,200VA at 240V?
a. 30A b. 32.5A c. 37.5A d. 42.5A
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Calculate the activity coefficient and activity of each ion in a solution
What will be an ideal response?
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An ideal gas has CP* = 5R. It enters a adiabatic compressor at P = 0.1 MPa and T = 300 K. If the exiting pressure is 0.6 MPa and the efficiency of the compressor is 80%, what is the temperature of the exiting gas?
A. 103 K B. 429 K C. 403 K D. 461 K E. Insufficient information to solve
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Which of the following standards and codes organizations has United States regulatory authority?
a. ASTM b. UL c. NSPE d. EPA
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