The maximum length of the trunk duct in an extended plenum system is _____
A) 12?
B) 4?
C) 16?
D) 24?
Answer: D
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When a diesel engine is operated exposed to dense grain chaff, which of the following devices can help extend air filter life?
A. lower restriction filter B. higher restriction filter C. air filter pre-cleaner D. adding methyl hydrate to fuel tank
Consider this scenario. Assume that you want to buy a box of apples. You have the box you plan to fill up and you know that apples cost 10 cents each. How can you determine what the box of apples is going to cost you? This scenario is analogous to ____ in structural engineering.
A. bidding for a construction project B. estimates for simple projects C. determining indirect costs D. quantity takeoffs
Which of the following is caused by the presence of slime-producing biologic organisms in the water in an
HVAC system? a. Increased water flow b. Inadequate heat transfer c. Excessive bleed-off d. Excessive cooling