Lettering on sketches does not need to be readable.
Answer the following statement true (T) or false (F)
False
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Who discovered the relationship between gases when one or more were mixed together?
A) Robert Boyle B) John Dalton C) Daniel Bernoulli D) Jacques Alexander Cesar Charles
A capital-budgeting problem is defined as follows: three projects are to be evaluated at a MARR of 12.5% per year. No more than $3.0 million can be invested.
(a) Use a spreadsheet to select from the independent projects.
(b) After some study, it was determined that the life of project 3 can be increased from 5 to 8 years for the same $1 million investment; however, the estimated annual NCF would remain steady from year 5 on. Use Goal Seek to determine the NCF in year 1 and beyond for project 3 (as a bundle of one project) to have the same PW as the best bundle in part (a). All other estimates remain the same. With these new NCF and life estimates, what are the best projects for investment?
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After heating a fixed volume of gas at 50 psia from 300° R to 600°R, its pressure will be:
A) The final pressure cannot be determined without knowing the volume. B) 100 psia because the pressure and temperature vary directly. C) 50 psia because pressure and temperature are independent variables. D) 25 psia because the pressure and temperature vary inversely.
Why is a check valve installed in the suction line of the lowest temperature coil in a multiple evaporator system?
A) To allow the service technician to check the operation of the system B) To allow the coil to be isolated from other evaporator coils when checking the operating of the evaporator pressure regulator C) To prevent refrigerant migration from the higher temperature and pressure coil to the lower temperature and pressure coil D) To insure that the refrigerant is completely vaporized before leaving the evaporator