According to NEMA definitions, which of the following is a type of totally enclosed motor?
a. Drip-proof
b. Guarded
c. Sealed windings
d. Water-cooled
d
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When planning a vegetable garden, the soil should have a pH range of _____
A) 5.3 to 7.0 B) 6.3 to 7.3 C) 6.3 to 7.0 D) 6.0 to 7.3
How many degrees of CAMSHAFT rotation are needed for a piston to travel from TDC to BDC and return to TDC?
A) 180 B) 360 C) 90 D) 720
A variable-air-volume system changes the amount of air the fan delivers in order to:
A) Bypass the supply air. B) Keep the equipment operating at capacity. C) Deliver the maximum air allowed by the fan. D) Match the zone requirements.
Identify the incorrect statement in regards to PAG (polyalkylene glycol) oil:
A. PAG oil is hygroscopic. B. PAG oil is easily mixed with any other refrigerant oil. C. PAG oil can easily damage paint surfaces. D. PAG oil should be kept in a clean container to prevent contamination.