Why are positive shutoff devices used when removing gauge manifold sets from Schrader valves?
A) To prevent post-removal refrigerant venting B) To restart the system for installation
C) To reduce the release of refrigerants D) To automatically loosen Schrader valves
C
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A fast way of locating a weak cylinder is with a cylinder power balance test. Then a ____________________ or leakage test can be performed to further pinpoint the cause of the problem.
Fill in the blank(s) with the appropriate word(s).
Technician Asays the output of one computer can also be used as an input to another computer. Technician B says a sensor is an output device. Who is correct?
A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B
When compared to a port fuel injected engine, a GDI engine will have a(n) ________ compression ratio
A) Lower B) Reversed C) Higher D) Interrupted
What efficiency advantage do water-source heat pump systems have over air-source heat pump systems?
A) Water is a more efficient heat-transfer medium, and water temperatures are moderated by the earth. B) It takes less horsepower to pump water than air. C) Heat has more affinity for water than air. D) Water is a more efficient refrigerant than either R-22 or R-410A.