Lines on drawings used to indicate an area that has been cut away and shown in a section view are called _____.
a. extension lines
b. break lines
c. phantom lines
d. cutting plane lines
Answer: D
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Which statement about isotherms of a cubic EOS is true?
A. At Tr = 1.000 and any pressure, the first and second derivatives of P with respect to V will both be equal to zero. B. When Tr< 0 the substance can be modeled as a VLE mixture inside the pressure dome. C. Vc represents the critical molar volume and occurs at Tr and Pr. D. It is possible for an isotherm to include some negative values of P. E. None of these statements are true.
All of the following statements are true EXCEPT:
A. Kevlar is more resistant to heat than graphite. B. composite graphite gaskets require a very smooth surface finish. C. graphite gaskets can be coated to lengthen their service life. D. graphite transfers heat from the engine to the coolant more quickly than Kevlar.
When the clutch is engaged, spring force clamps the friction disk between the pressure plate and the _____.
A. flywheel B. differential C. reaction plate D. clutch pedal
The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm- intervals in the known material (copper alloy, K=52W/m·K) and the unknown sample as shown. The known material is heated on the top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper.
