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For diffusion of Cu into Al at 1000 K for 10 hours, calculate the distance into the material at which the concentration of Cu will be 5% if the initial concentration of Cu in the Aluminium was 0.5% and the surface concentration during diffusion was 50%.
Air is expanded in a poly tropic process from a pressure and volume of 350 kPa and 0.03 m3 until its volume is increased by 6.667 times. The poly tropic process has an exponent n = 1.5
An engineer determines that a 40 cm long rod of 1020 grade steel will be subjected to a tension of 20 kN.
a steam power plant has a high pressure of 3mpa and it maintains 60c in the condenser. a condensing turbine is used but
unidirectional reinforced composites1. calculating the mechanical properties of unidirectionally reinforced composites
electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water
a very wide sheet of 7075-t651 aluminum plate 8mm thick is found to have a single-edge through-the-thickness crack 25
a helicopter gas turbine requires an overall compressor p.r. of 101. this is to be obtained using a two-spool layout
a tank fitted with an electrical resistor holds 2 kg of nitrogen n2 initially at 1 bar. over a period of 10 minutes
Determine the mass flow rate of the air passing through this engine and the rates of heat addition and rejection when this engine produces 1000 hp. Assume constant specific heats at room temperature.
Air with a static temperature of 223 K entering a gas turbine engine intake at V1 = 300 m/s accelerates to a new velocity (V2) and decreases in pressure (P2) at the exit plane of the intake. The pressure recovery (P2/P1) through the intake is .833. A..
one kilogram of water at 300degc expands against a piston in a cylinder until it reaches ambient pressure 100 kpa at
a solid circular shaft and a tubular shaft both with the same outer radius of cco 0.600in are being considered for a
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