The intake valve opens at 39° BTDC (before top dead center) and closes at 71° ABDC (After bottom dead center). The exhaust valve opens at 78° BBDC (before bottom dead center) and closes at 47° ATDC (after top dead center). Which of these is correct regarding this cam timing?
A) Intake valve duration is 110° B) Exhaust valve duration is 125°
C) Overlap is 86° D) Both A and B
C
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_________________________ are used to display technical data. They are similar to a line chart, but the data points remain disconnected.
Fill in the blank(s) with the appropriate word(s).
An important component of the cut-flower industry is_____________
A) marketing flowers B) landscaping C) producing bulbs D) constructing greenhouses
Which of the following statements is accurate?
A) Nitrogen flow must be kept at 50 psig while brazing. B) Nitrogen flow should be kept at design pressure while brazing. C) Nitrogen should not be in the system while brazing. D) Nitrogen flow must be kept below 2 psig while brazing.
How can the operator recognize a neutral fuel gas flame?
A) The outer cone should have a relatively smooth shape. B) A slight hissing sound should be heard. C) The lengths of the inner cone and the outer cone are almost equal, with the inner cone recessed by 1/16 inch to 1/8 inch from the outer cone. D) All of the above E) None of the above