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A steel microstructure contains 75% martensite and 25% ferrite; the composition of the martensite is 0.6% C. Using Figure 12-28, determine
(a) the temperature from which the steel was quenched, and
(b) the carbon content of the steel.
The drag coefficient for the parachute which may be treated as hemispherical is 1-3 and mass density of air is 1-216 kg/m .
Evaluate the power specific speed of the turbine and decide if the data given is consistent with the stated overall efficiency.
Determine the required hydrostatic test pressure according to AS 1210 Clause 5.10.2.1 and compare it to the actual test pressure carried out
a cylindrical workpart 125 mm in diameter and 900 mm long is to be turned in an engine lathe. cutting conditions are v
Air at 22 kPa, 220K and 250 m/s enters a turbojet engine in flight at an altitude of 10,000m. The diffusor slows the air down to a very low speed relative to its inlet. The pressure ratio across the compressor is 12. The turbine inlet temperature is ..
Which is the most economical in shear? Assume allowable stress values are: σa = 18 ksi and τa= 11 ksi. The most economical beam is that having the largest capacity-to-weight ratio. Neglect fabrication costs in answering (c) and (d) above. (Note: O..
Will it be faster than a simple SPI channel?
consider a well-insulated horizontal rigid cylinder that is divided into two compartments by a piston that is free to
100 kg of liquid water at 25C and 50 kg of ice at 0C are placed in an isolated container. (a) (b) (c) Find the initial volume of the liquid-ice mixture, in m3. Determine the volume after all the ice is melted, in m3. Will the temperature of the li..
a pressure gauge reads 23.1 in hg inches of mercury vacuum i.e. -23.1 in hg gauge. the barometer reads 76.0 cm hg. what
a 30-ton engine exerts a constant horizontal force of 40103-lb on a train having three cars that have a total weight of
Calculate the cost per piece of a milling operation that is used to machine a pocket of 2”x3”x0.5” (LxWxD). The material being machined is high silicon aluminium. The tool material is PCD.
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