Which of the following reduces the dewpoint temperature of a fossil fuel powerplant's exhaust: (a) increased hydrogen content of the fuel (b) increased total pressure (c) increased excess air (d) increased relative humidity of combustion air.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid