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There is a membrane made of an isotropic material whose elastic modulus and Poisson's ratio is E and v, respectively. When this membrane is elongated along x-direction with no lateral deformation in y-direction, the apparent elastic modulus (E') determined by measured values of stress and strain Sigma_x and Epsilon_x) should be greater than the material's own modulus (E) due to Poisson's effect. Determine the percentage difference between E' and E.
a pipe system carried a steam-water mixture at 250psi 95 quality. a leak develops in the pipe allowing fluid to escape
an actual refrigerator absorbs 500 kj of heat from a sink at 250 k and reject 660 kj of heat to environment at 300 k.
refrigerant gas r-134 at 500k and 70 degrees c enters an air-cooled condenser heat exchanger and leaves the condenser
You are considering two different diffusion processes involving Carbon into FCC iron. The first process is carried out at 900 oC for 3 hours and produces a carbon concentration of 0.20 wt% at a depth of 2 mm. At what depth would this concentration oc..
in a process in which ball bearings are produced steel ball bearings of .9 cm diameter are quenched by dropping them at
r-134a fills a 0.1 m3 capsule at 20oc 200 kpa. it is placed in a deep freezer where it is cooled to -10oc. the deep
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A heat exchanger is to heat water (Cp= 4.18 KJ/Kg.C ) from 25 to 60 C at rate of 0.2 kg/s. the heating is to be accomplished by geothermal water ( Cp= 4.31 KJ/Kg.c ) available at 140C at a mass flow rate of 0.3Kg/s. Determine the rate of heat transfe..
air enters an adiabatic diffuser at 320 k and 100 kpa with a velocity of 642.9 ms. at the diffuser exit the temperature
a refrigerator in a kitchen at 20 degrees celcius uses r-134a. the freezer is to be kept at -5 degrees celcius or
descriptive questions - give brief answers in words. no calculations are required. you may write your answers in point
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