What is requires in order to calculate the superheat setting of a bus air conditioning system?
A. Evaporator outlet temperature and evaporator inlet temperature pressure and a refrigerant pressure temperature chart.
B. Evaporator outlet temperature, evaporator inlet pressure and a refrigerant pressure temperature chart.
C. Condenser inlet temperature, evaporator inlet pressure and a refrigerant pressure temperature chart.
D. Evaporator outlet temperature, suction pressure and a refrigerant pressure temperature chart.
Answer: D
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These metals contain iron, such as iron and steel.
a. ferrous b. nonferrous c. alloys d. inorganic
A common problem with larger window air-conditioning units used in older homes is:
A) Nuisance circuit breaker trips due to inadequate electrical service. B) Restrictive neighborhood covenants, which prohibit window units. C) Overcooling the home. D) Older-style window framing will not support the weight of a window unit.
An identification number of 74HCT would identify the series as a:
A) high-speed TTL that can be directly driven by CMOS. B) low-speed CMOS that can be directly driven by TTL. C) high-speed CMOS that can be directly driven by TTL. D) low-speed TTL that can directly driven by CMOS.
ASE-Style Multiple Choice The term MOST-Likely used to describe a soft, flexible, thin plastic material often applied over a foam filler is:
A. vinyl B. dolly C. backing strip D. molded core