A crucial requirement whenever a rooftop installation is considered is:
A) That rooftop units can only be installed on flat roofs.
B) To ensure that the roof structure can support the weight of the equipment.
C) That a power drop can be made directly from the utility pole to the unit.
D) To ensure that the unit cannot be seen from the front of the building.
B
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When a three phase motor tries to operate on only two legs of power:
A) The motor overheats and draws high amp draw. B) The motor does not run or draw any amps because it needs all three legs to complete the circuit. C) The motor operates like a single phase motor with 2/3 the horsepower. D) The motor runs slower and draws low amps.
What is used for an identification mark on acetylene hose assembly nuts?
a. capital "a" stamped in it b. letters "ac" stamped in it c. The word fuel stamped in it d.a grooved line
Multiply the following numbers to obtain the correct answer: 54 inches x 8
What will be an ideal response?
The OR logic function of a relay ladder circuit is performed by __________.
A. two or more N.O. push buttons connected in series B. two or more N.O. push buttons connected in parallel C. two or more N.C. push buttons connected in series D. two or more N.C. push buttons connected in parallel