The heat energy released from the combustion process is expressed in ________

A) BTUs B) Calories C) Fahrenheit D) None of these


A

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____ wrenches have thin heads that make them useful in tight places, where there’s limited access space around the nut or bolt head.

a. Box-end b. Adjustable c. Socket d. Allen

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Which if the following rules must be followed if all of the cables in a tray are smaller than 4/0?

a. The cables must be installed in a single layer. b. The sum of all the diameters of all cables shall not exceed the cable tray width. c. The sum of the cross-sectional area of all cables must not exceed the maximum allowable cable fill area. d. The diameter of the cables shall not exceed ?D2/4.

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The main types of overcurrent protection used for a condensing unit are:

A) Time delay fuses or an HACR circuit breaker. B) Condensing units do not require overcurrent protection. C) Fast blowing fuses. D) Magnetic overload relays.

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The threaded movable part that rotates on a micrometer is called the ________

A) Anvil B) Spindle C) Sleeve D) Thimble

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