When a parallel fan-powered VAV box is in the heating mode, the primary air damper is _____
a. fully open
b. fully closed
c. at its minimum position setpoint
d. used to control heating airflow
c
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?Why is a tap turned backward after turning forward when cutting a thread?
What will be an ideal response?
The place where the manure pile was stored last year, a narrow strip that used to be a limestone gravel farm road, and the spot where fertilizer is usually transferred from a nurse truck to the tractor spreader are all examples of parts of a 25 hectare field that should be treated as follows when sampling soil for the soil test lab
A) carefully avoided while sampling B) more intensively sampled (more cores per hectare) than other areas C) sampled more deeply than other areas D) included, like all other areas, in the sample sent in for analysis E) sampled and sent in separately
What is the first step when servicing a vehicle refrigeration (A/C) system?
A) Vacuum the system B) Refrigerant identification C) Mode door check D) Weigh the refrigerant charge
The oil pressure gauge should come up to normal within how long after starting the engine
1) Minutes. 2) Seconds. 3) It does not matter.