Why do some air cylinders have cushions?
What will be an ideal response?
To reduce cylinder shock and noise that would occur if the piston rod was allowed to slam into the end of the cylinder.
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Each of the following incompressible substances are heated by increasing its internal energy by 1500 kJ, with the purpose of increasing the temperature from 300 K to 500 K. Determine the mass of each substance which will result in this temperature increase:
(a) aluminum (c = 0.90 kJ/kg-K) (b) gold (c = 0.13 kJ/kg-K) (c) zinc (c = 0.39kJ/kg-K) (d) gasoline (c = 2.08 kJ/kg-K). Given: ?U = 1500 kJ; T1 = 300 K; T2 = 500 K What will be an ideal response?
Which of the following is produced by differences in density between the gases within the vent conduit and the surrounding atmosphere?
a. draft b. dilution air c. natural draft d. mechanical draft
It is relatively easy to move an electron from the valence ring of a conductor
A) True B) False
A coolant leak will show as what color?
A) Orange B) Green C) Red D) Any of the above, depending on the type of coolant