Determine the mean effective pressure of an ideal otto cycle that uses air as the working fluid if its state at the beginning of the compression is 13 psia and 60°f, its temperature at the end of the combustion is 1500°f, and its compression ratio is 9. use constant specific heats at room temperature. the properties of air at room temperature are r- 0.3704 psia-ft3 lbm-r, cp 0.240 btu/lbm-r, cv- 0171 btu/lbm-r, and k 1.4 the mean effective pressure .

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.