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1. What is the di¤erence between cast iron and steels?
2. What do A1, A3, and Acm temperatures refer to? Are these temperatures constant?
3. Calculate the amounts of ferrite, cementite, primary microconstituent, and pearlite in the following steels:
Evaluate the effect of the water spray on efficiency (net work out divided by heat input) and net power out per kg/s of dry air coming into the turbine.
a piston-cylinder with a volume of 0.5 m3 holds 1 kg of nitrogen at a temperature of 261 k. heat transfer to the
A competitor in a hill-climb event finds during practice that his car becomes airborne at a particular point on the hill. Shortly after landing the lowest point in the car just contacts the road. The mass of the car is 2000 kg and the suspension is d..
saturated water vapor is enclosed in a piston cylinder arrangement with a volume v initial 5 liters at a temperature
If the mass diffusivity of hydrogen is 9 X 10-7 m2/s, how much time is required to bring the density of dis- solved hydrogen to a value of 1.2 kg/m3 at the center of the sheet?
A certain part is routed through six machines in a batch production plant. The setup and operation time' for each machine are given in the table below. The batch size is 100 and the average non operation time per machine is 12 hr.
a well-insulated steam turbine is operating at a steady state with an inlet temperature of 780k inlet specific
in a hydroelectric power plant water enters the turbine nozzles at 880 kpa absolute with a negligible velocity. if the
Write the velocity pro?le and calculate the torque and the power required to rotate the inner cylinder at 2000 rpm assuming a laminar ?ow.
assuming that air in the troposphere behaves like a perfect gas and that as the altitude varies the thermodynamic
A rigid tank with a volum of 2.5m^3 contains 5kg of saturated liquid-vapor mixture of water at 75deg C. Now the water is slowly heated. Determine the temperature at which the liquid in the tank is completely vaporized
Compute about 10 points along the curve by using the computerized software to find the volume at 200?C and the various pressures. How different is the work calculated if ideal gas is assumed?
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