A rack gear is designed to change rotary motion into _____ motion.
A. reciprocating
B. straight-line
C. rotary
D. all of the above
Answer: B
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The EPR valve is installed in the suction line at the evaporator outlet and it ____.
A. modulates the refrigerant vapor to the compressor B. prevents the boiling point in the evaporator from dropping below a pre-set point C. operates like an AX valve when used with a TX valve D. all of the above
What site conditions should be taken into account when considering the installation of a ground source heat pump?
What will be an ideal response?
What procedure is required when using silicone-compound coolant hoses?
A. More frequent replacement. B. Use of specially formulated coolants. C. Should only be installed using quick-couple hose connectors. D. Use of specialized clamps torqued to the OEM specifications.
A measurement of electrical current flow:
A. ampere B. current C. watt D. volt E. none of the above