What are some of the concerns with the heat-pump-style room air conditioner?
What will be an ideal response?
A few things to keep in mind for any heat pump follows. The compressor is not a conventional air-conditioning compressor. It is a heat pump compressor. It has a different cylinder displacement and horsepower. The compressor must have enough pumping capacity for low-temperature operation. The unit evaporator also operates at below freezing during the heating cycle, and frost will build up on the evaporator. Different manufacturers will handle this frost in different ways; you will have to consult their literature. A defrost cycle may be used to defrost this ice. Another point to remember is that the capacity of a heat pump is less in colder weather so supplemental heat will probably be used. Electrical strip heat is the common heat. It may also be used to prevent the unit from blowing cold air during the defrost cycle.
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A bushing was nicked and scratched when the shaft was being removed. There was no other apparent wear or damage. Technician A says fine emery cloth could be used to repair the damage. Technician B says sanding or polishing the bushing may cause the shaft to wobble in the bushing bore. Who is correct?
A. A only C. Both A and B B. B only D. Neither A nor B
Compute the reactions and draw the shear and moment curves for the beam in Figure P9.3. EI is constant.
When installing a 15 1/2-inch clutch assembly, Technician A uses guide studs installed in the flywheel to support the weight. Technician B uses a splined pilot shaft when installing both 14- and 15 1/2-inch clutch assemblies. Who is correct?
A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A nor B
Personal and corporate rights to the ownership of designs and other forms of ____________________ property are established in patent, trademark, and copyright law.
Fill in the blank(s) with the appropriate word(s).