A three-prong plug should be used when a tool is:
A. grounded
B. not double insulated
C. bypassed
D. improperly used.
Answer: B. not double insulated
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What safety device trips closed when the line pressure exceeds a set value?
What will be an ideal response?
All of the following statements are true EXCEPT:
A. a torque converter serves the same purpose as the clutch used with a manual transmission. B. an input shaft connects the torque converter to the transmission. C. the transmission shaft provides hydraulic fluid to the torque convertor, value body, and lubrication circuits. D. a computer makes shift decisions and a valve body acts on them.
How are heat pumps classified?
A) By their cooling source and cooling sink B) By their refrigerant type C) By their air intake pump D) By their heat source and heat sink
There are no check valves or extra metering devices on most water-source packaged units because:
A) Most water-source packaged units use suction line accumulators and charge compensators. B) The heat exchangers are most often made of copper, cupronickel, or stainless steel. C) Water-source packaged units have a much lower operating temperature range than air-source units. D) Most water-source packaged units use a single bi-flow thermostatic expansion valve.