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A spark-ignition engine has a compression ratio of 8, an isentropic compression efficiency of 85%, and an isentropic expansion efficiency of 95%. At the beginning of the compression the air in the cylinder is at 13 psia and 60 °F. The maximum gas temperature is found to be 2300 °F by measurement. Determine the heat supplied per unit mass, the thermal efficiency, and the MEP using cold air standard analysis
the free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined
a 1 foot square 14 inch thick piece of oak floats in a large pool of water. the convective heat transfer coefficients
a steel beam of total length 3m is simply supported at the ends by pin-jointed supports a and c. a diagrammatic
air at 1600 k 30 bar enters a turbine operating at steady state and expands adiabatically to the exit where the
a small steel cylinder is used as a pressure vessel for a paint gun. the label says 24 grams co2 filled. assume the
two ships a amp b are moving at constant velocities. at t0 the position of ship a is 2.41 miles east and 3.14 miles
a fan that can provide air speeds up to 50ms is to be used in a low-speed wind tunnel with atmospheric air at 25 degc.
a tank having a volume of 0.05m3 contains 80 saturated vapor and 20 saturated liquid water by volume at a temperature
two particles a and b start from rest at the origin s 0 and move along a straight line such that aa 6t-3fts2 and ab
It is necessary to design a square-section composite bar that will withstand an applied load without deflecting more than a specified amount.The design specification for the bar, including its dimensions and loading criteria, is given below.
question 1. a mild steel bar 40 mm diameter and 100 mm long is subjected to a tensile force along its axis.youngs
a shaft is loaded by a torque of 5 kn-m. the material has a yield point of 350 mpa. find the required diameter usinga
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