Which of the following is a characteristic that helps distinguish fans from blowers?
a. Fans always require more horsepower to move the same volume of air as a blower.
b. Fans are able to perform better than blowers when the resistance to airflow is high.
c. The air flow is normally parallel to the shaft of a blower.
d. The air flow is normally parallel to the shaft of a fan.
d
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The sensible heat portion of the duct load can be calculated as: ____.
A. QSENSIBLE DUCT LOAD = Envelope Load + Duct Load Factor / Duct Insulation Correction B. QSENSIBLE DUCT LOAD = Envelope Load × Duct Load Factor + Duct Insulation Correction C. QSENSIBLE DUCT LOAD = Envelope Load × Duct Load Factor × Duct Insulation Correction D. QSENSIBLE DUCT LOAD = Envelope Load / Duct Load Factor × Duct Insulation Correction
Which of the following often raise the puppies used as guide dogs their first year?
a. kennels c. volunteers b. specific breed owners d. dog trainers
Technician A says cast aluminum parts are formed in a mold. Technician B says extruded parts may have multiple cells in the center of them. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
During a GMAW procedure, a powered extraction system is often an essential tool for _____
a. removing welding fumes b. feeding wire electrode c. directing shielding gas d. reducing welding spat