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The relationship between heat treatment and toughness and hardness i.e. briefly explain why the different heat treatments give different toughness and hardness values.
2.51 a body whose surface area is 0.5 m2 emissivity is 0.8 and temperature is 150 is placed in a large evacuated
air enters a compressor at 105 kpa and 300 k with a volumetric flow rate of 12 m3min and exits at 1200 kpa and 400 k.
a piston-cylinder contains 1.2 kg of saturated water vapor at an initial temperature of t1 200 oc.
a vehicle a is stuck on the railroad tracks as a train b approaches with a speed of 120 kmh. as soon as the problem is
a geothermal power plant utilizes steam produced by natural means underground. steam wells arc drilled to tap this
tank a has surface height of 2 meters. tank b has surface height of 1 meter. the tanks are connected by a siphon with
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.901 and exits as a saturated liquid. the steam is
1. a commercial refrigerator keeps food fresh at -12 ordmc. it is estimated that the refrigerator removes 3300 kjhr
a natural gas methane pipeline is to be designed to transport the gas at a rate of 50000 scfm. the pipe is to be 6
a standard steel specimen of 13 mm diameter elongated 22 mm when it was subjected to a tensile force of 29.5 kN if the specimen has a length of 200 mm and that force applied within elastic range. what is the elastic modulus of elasticity ?
wet steam p12.8 kpa x0.90 enters a heat exchanger with a flow rate of 1.2 kgs. cold water at 12.8 kpa and k also
consider steady flow of a constant property fluid in a long duct formed by two parallel planes. consider a point
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