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
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.
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.
The threaded movable part that rotates on a micrometer is called the ________
A) Anvil B) Spindle C) Sleeve D) Thimble