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An industrial machine is being cooled by 0.4 kg/s water at 15 degrees C that is chilled from 35 degrees C by a refiregration unit with a Coefficiency Of Performance of 3. Find the rate of cooling required and the power input to the unit.
a train made up of 3 cars of weight 60000 lb each connected by coupling springs of stiffness 15000 lbin. is released by
water at 200 lbfin2 and 300 f is throttled adiabatically through a valve to 30 lbfin2. the inlet velocity is 5 fts and
1.consider a room 3 m x 3m x 3m with one faccedilade made of glazing with diffuse transmittance 0.6 and reflectance
a cup of coffee 12oz 0.0125 ft3 that is at 140 degrees f sits on a desk. after some negligable time the final
a particle is moving along a straight line such that when it is at the origin it has a velocity of 8 ms part a if it
a gas is contained in a vertical frictionless piston-cylinder device. the piston has a mass of 4kg and a cross
a water pump is attached to an electric motor. the inlet and outlet diameters of the pump are the same. the volume flow
refrigerant r-134a enters a 1 cm constant diameter tube at 400 kpa and 30 degree c. the refrigerant leaves the tube at
packages enter the 10ft chute at a with a speed of 4ftsec and have a 0.3g acceleration from a to b. if the packages
a rankine cycle is to drive an electric generator to produce 600 mw of electricity. the generator is 95 efficient.the
a piston-cylinder contains argon at a temperature of 50 degc a pressure of 500 kpa and a volume of 10 liters. a
air undergoes a process with the states given below. find the change of entropy using the ideas gas table and compare
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