The flame in a gas fired furnace is burning with heavy yellow tips. What is the problem?
What will be an ideal response?
There is not enough primary air. Check the air shutter opening and for debris in the furnace.
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Air flows into and out of a room, as shown, with the pressure and temperature at 100 kPa and 18ºC at all positions. If the volume flow rate V3 = 20 m3/min, the mass flux m1 = 0.2 kg/s, the the velocity V2 is nearest:
A) 8.1 m/s
B) 5.8 m/s
C) 3.4 m/s
D) 2.5 m/s
A commercial project requires the installation of 1,856 square feet of acoustical ceiling. Using a productivity rate of 0.013 labor hours per square foot and a productivity factor of 0.95, determine the number of labor hours required to install the ceiling.
What will be an ideal response?
Any hardships imposed by zoning regulations may be relieved by a(n) ____.
a.waiver b.exception c.variance d.permit
The mechanical manipulation of soil to provide favorable plant growth is called:
A) tillage. B) compaction. C) conservation. D) profiling.