____ rooflines, also known as cathedral ceilings, can either be in an unfinished attic or in a living space with finish material applied directly to the rafters.
A. Pointed
B. A-line
C. Vaulted
D. Insulated
Answer: D
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Ammeters that respond to the average value convert the alternating current into direct current. This value must be increased by a factor of ____ to change the average reading into the rms value for a sine wave current.
A. 0.651 B. 1.111 C. 1.414 D. 1.730
?CADD drawings are made on ____.
A. ?models B. ?layers C. ?paper D. ?coordinates
Typical condenser fan motor speeds are about:
A) 1,600 rpm or 3,400 rpm. B) 500 rpm or 800 rpm. C) 1,000 rpm or 1,600 rpm. D) 800 rpm or 1,000 rpm.
What controls the firing of a water boiler?
A) The auxiliary switch on the zone valve B) An aquastat that senses the temperature of the water in the boiler C) The boiler water temperature is normally maintained by the high limit and the low water cutout. D) A wall thermostat that senses the temperature of the house