The service disconnecting means for a one-family dwelling load calculation must have a rating of at least ____.

A. the calculated load
B. the load for a single unit
C. one quarter the total load
D. one half the total load


Answer: A

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A low-voltage control circuit _____.

a. operates from the load circuit b. is separate from the load circuit c. is never connected to a control transformer d. carries the full-load of the line current

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For Example 6.6 (b), if the units of k, A, T1 ? T2, and L, are given in Btu/h·ft·°F, ft2,°F, and ft, respectively, what is the appropriate unit for heat transfer rate q?

What will be an ideal response?

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What are the most common types of refrigeration system contaminants introduced because of improper installation?

What will be an ideal response?

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The total system response is the sum of the natural and forced responses

Indicate whether the statement is true or false

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