To prevent mineral buildup and scale on an ice machine:
A) Use an ultraviolet light. B) Test the pH of the incoming water.
C) Clean regularly with a chlorine disinfectant. D) Use a water filter to remove suspended solids.
D
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The most common service factor appearing on a motor's nameplate is _____.
a. 1.15 b. 1.5 c. 2 d. 2.15
VVT systems can be used for which of the following purposes?
A. Vary valve timing B. Vary valve lift C. Vary valve duration D. All of the above
What type of grain structure is mostly affected by stress relief anneal?
A) Intermetallic compounds and martensite B) All grains are recrystallized C) Cold worked ferrite grain D) Hard carbide and pearlite grains
All types of direct heating equipment convey heat without ducts, and the products of ____ must be vented outside.
A. convection B. reversion C. combustion D. reduction