Which of the following refrigerant piping techniques help to get oil to flow up a riser in a suction line?
a. Selecting a line size that results in a very low velocity.
b. Selecting a line size that is one or two sizes larger than the rest of the line.
c. Installing a trap at the bottom of the riser.
d. Installing a liquid-to-suction heat exchange
c
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Rack-and-pinion gears convert ___________________ motion into linear motion.
A. forward B. backward C. reciprocal D. rotary
The heat of compression can be determined using:
A) The enthalpy difference from the beginning to the end of the compressor line. B) The enthalpy difference from the beginning to the end of the metering device line. C) The enthalpy difference from the beginning to the end of the condenser line. D) The enthalpy difference from the beginning to the end of the evaporator line.
All records for OSHA can be maintained on just three forms. These forms are:
A) OSHA accident form, OSHA injury form, and OSHA near miss form B) 1040EZ, 1040ES, and 1040EP C) Form 300, 301, and 300A D) None of the above
What are the root words of smog?
A. sulfur and ozone B. smile and ogle C. smoke and fog D. smolder and ogre