Cables in a fire alarm system must be supported by _____.
a. NFPA-brand cable ties
b. winged expansion anchors
c. the building structure
d. red electrical boxes
c. the building structure
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Converting mechanical energy into heat energy is accomplished by the:
A. Cooling system B. Brake system C. Suspension system D. Ignition system
A(n) ____________________ is where the allowable variation from the nominal value is all in one direction and zero in the other direction.
Fill in the blank(s) with the appropriate word(s).
____________________ increase feed efficiency and improve rate of gain
Fill in the blank(s) with the appropriate word(s).
To increase the operating superheat on a thermostatic expansion valve:
A) The sensing bulb should be moved farther away from the evaporator. B) The adjusting stem should be turned counterclockwise. C) The adjusting stem should be turned clockwise. D) The power head should be tightened one-quarter turn on the valve.