If an air-conditioning system develops a refrigerant leak and the unit is not equipped with a low pressure control, which of the following could occur?
A. The compressor could overheat.
B. The head pressure would rise.
C. Air could get pulled into the system.
D. Both A and C are correct.
Answer: D
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The following data are from the U.S. EPA AP-42 emission factors for malt beverages. For a closed fermenter, fermenter venting CO2 = 2,100, VOC (ethanol) = 2.0, and hydrogen sulfide, H2S = 0.015. The units for the emission factors in the EPA tables are in lbs of pollutant per 1000 barrels (bbl). A brewery produces about 7 million barrels of product per year. Estimate the emissions of
a. Kg of carbon dioxide per year from fermenter venting b. Kg of VOCs (ethanol) per year from fermenter venting c. Kg of hydrogen sulfide per year from fermenter venting What will be an ideal response?
The mixture of gas and ethanol is known as ______________________
Fill in the blank(s) with correct word
Uneven disc brake pad wear is being discussed. Technician A says the caliper piston may be stuck. Technician B says the caliper may be stuck on the slides and unable to "float." Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A typical blower motor draws about ________ amperes on high speed
A) 3 B) 5 C) 12 to 15 D) 7 to 8