A CNG transit bus with a normal range of 350 miles stops running after 3 hours. The high-pressure fuel gauge shows 375 psi. Any of these
could be the cause EXCEPT for a:
(A) stuck cylinder flow control solenoid.
(B) defective engine ECM wiring.
(C) low CNG fuel cascade system pressure.
* (D) defective high-pressure regulator.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

On a average work day more than work place firs are reorted

Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis