Which of the following features increases overall efficiency to between 83% and 89%?
A) sealed combustion chamber B) flame-retention burner
C) barometric damper D) aquastat controller
A
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?An engine should produce a minimum of _____ inches of vacuum while cranking, but most engines will produce far more.
What will be an ideal response?
Could seed coats pose problems for planting and growing crops successfully?
What will be an ideal response?
Nuclear safety devices installed several years ago have been depreciated from a first cost of $200,000 to zero using MACRS. The devices can be sold on the used equipment market for an estimated $15,000, or they can be retained in service for 5 more years with a $9000 upgrade now and an OE of $6000 per year. The upgrade investment will be depreciated over 3 years with no salvage value. The challenger is a replacement with newer technology at a first cost of $40,000, n = 5 years, and S = 0. The new units will have operating expenses of $7000 per year.
(a) Use a 5-year study period, an effective tax rate of 40%, an after-tax MARR of 12% per year, and an assumption of classical straight line depreciation (no half-year convention) to perform an after-tax AW-based replacement study. (b) If the challenger is known to be salable after 5 years for an amount between $2000 and $4000, will the challenger AW value become more or less costly? Why?
?Arrowheads at the ends of the cutting plane line indicate:
A. ?where the object is sliced by the cutting plane B. ?direction of the cut C. ?what cutting plane line is to be used D. ?direction of sight