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A 380 cc single-cylinder two-stroke motorcycle engine is operating at 5500 rpm. The engine has a bore of 82 mm and a stroke of 72 mm. Performance testing gives a bmep od 6.81 bar, bsfc of 0.49 kg/kW hr, and delivery ratio of 0.748. a) What is the fuel to air ratio? (b) What is the air flow rate (kg/s)?
you are asked to design a solid circular shaft of minimum cost that is 1.3 m long and has to twist less than 3 degrees
Determine the maximum speed at which the car with mass m can pass over the top point A of the vertical curved road and still maintain contact with the road.
As part of a super-critical extraction of coal, an initially evacuated cylinder is fed with steam from a line available at 20 mPa and 400 degrees C. What is the temperature in the cylinder immediately after filling? (Answer to problem is 454 degrees ..
consider a person standing in a room at 18c. determine the total rate of heat transfer from the person if the exposed
pertains to vertical piston-cylinder assembly. a vertical shaft whose cross-sectional area is 0.8cm2 is attached to the
a common aluminum alloy al-2024 contains 4.4 wt. copper 1.5 wt. magnesium and 0.6 wt. manganese. the balance is
Discuss the condition of the water still in the bag and the reason for that condition. Base your discussion on topics that have been covered in this course so far.
1-2 an actual refrigerator absorbs 500 kj of heat from a sink at 250 k and reject 660 kj of heat to environment at 300
an n-type extrinsic semiconductor has an electron concentration of 5x1017 m-3. if the electron drift velocity is 350 ms
Two samples of different pure substances having equal mass are each placed in rigid containers. The first container is half as large as the second container. After the containers are sealed, the pressure of the first container is observed to be twice..
a pump is located 4.5 m to one side of and 3.5 m above a reservoir. the pump is designed for a flow rate of 6 ls. for
the automobile has a speed of 80 fts at point a and anacceleration a having a magnitude of 10fts2 acting in the
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