A 6 cylinder, 4-stroke spark ignition engine operates at 6000 RPM. The engine burns gasoline at the rate of 0.012 kg/s. Each cylinder has a stroke of 8 cm and a bore of 6.5 cm. The indicated fuel conversion efficiency is 28%. The brake mean effective pressure is 800 kPa. Calculate the mechanical efficiency and the brake specific fuel consumption for this engine.

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.

What precautions should you take to prevent injuries when dealing with heavy loads?

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody