What protection does today's motor-compressor assembly have against low motor cooling due to refrigerant shortage?
A. PTC device
B. compressor internal relief valve
C. motor winding thermostat
D. potential relay
Answer: C
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?Notes that may be used on multiple projects, such as standard symbol legends, are called ____ files.
A. ?library B. ?text C. ?building D. ?CAD
All of the following statements are true EXCEPT:
A. specialized compression fittings are not available for high-pressure applications. B. an O-ring is an artificial rubber donut used with straight threads to seal when compressed. C. O-ring connections are sometimes used to seal fittings. D. compression fittings can be used with rigid plastic tubing.
The root pass on stainless steel pipe is often made with GTAW instead of SMAW because GTAW _____
a. has greater deposition rates and does not penetrate as deeply b. produces root passes faster and with greater deposition c. allows greater control of root penetration and the added fill d. uses a flux and no shielding gas, which saves money
Materials specified on a roof plan include the roofing material, the type of underlayment, overhangs, drainage materials such as gutters and downspouts, vents and their location, and any major roof penetrations such as skylights and chimneys.
Answer the following statement true (T) or false (F)