If the contacts fail to open when a relay is de-energized, what is the trouble?
A) Dirt is causing the relay armature to stick.
B) There is too little current in the relay coil.
C) The return spring tension is too large.
D) There is no trouble. The relay is operating normally.
A
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What agency develops and advocates public health policies to prevent food-borne diseases?
A) FDA B) ATF C) EPA D) NOAA
If someone has the TEV way out of adjustment what would you do first to correct it?
a. Replace the TEV. b. Try to adjust the valve to 10° superheat. c. Find the midpoint of the valve adjustment. d. Turn the adjuster out (counter-clockwise) 4 turns.
The duct that has the lowest resistance to airflow is _____
a. fiberglass ductboard b. metal duct with duct liner c. metal duct with exterior duct wrap d. flexible duct
How many square feet are there in a parking area 175 feet x 225 feet?
A. 35,525 B. 36,925 C. 37,575 D. 39,375