Why are draft inducer fans necessary in today's furnaces?
A) To separate the flue gas from the heat through centrifugal force
B) To move the flue gases through the ductwork
C) The flue gases cannot make their way through the new heat exchangers on their own.
D) To move gas into the burner assembly
C
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What percentage of the United States land resource is devoted directly or indirectly to agriculture?
a. 15 c. 50 b. 25 d. 75
One way of increasing heat transfer from the head on a hot summer day is to wet it. This is especially effective in windy weather, as you may have noticed. Approximating the head as a 30-cm-diameter sphere at 30°C with an emissivity of 0.95, determine the total rate of heat loss from the head at ambient air conditions of 1 atm, 25°C, 30 percent relative humidity, and 25 km/h winds if the head is (a) dry and (b) wet. Take the surrounding temperature to be 25°C.
ASE-Style Multiple Choice In collision repair, ____ involves adjusting the vehicle's tires so that they roll properly over the road surface.
A. A/C recharging B. wheel alignment C. wheel pulling D. powertrain removal
On the typical 4WD vehicle, a transfer case is used to send power to the front and rear axles.
Answer the following statement true (T) or false (F)