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The gases in the cylinder of an internal combustion engine have a specific internal energy of 800 kJ/kg and a specific volume of 0.06 m3/kg at the beginning of expansion. The expansion of the gases may be assumed to take place according to pn1.5=constant, from 55 bar to 1.4 bar. The specific internal energy after expansion is 230 kJ/kg. Calculate the heat rejected to the cylinder cooling water per kilogram of gases during the expansion stroke.
water at 60f flows through 5000 ft of pipe with a 50 ft headloss. the pipe is riveted steel with smooth walls. the
a rigid steel bottle v 0.25 m3 contains air at 100 kpa 300 k. the bottle is now charged with air from a line at 260 k
a 600 mm diameter wheel rolls without slipping on a horizontal surface as shown. rod ab is attached to the wheel at a
an initially deflated flat balloon is connected by a valve to a 12 m3 storage tank containing helium gas 2 mpa and
the structure of a house is such that it loses heat at a rate of 5400 kjh per degree celcius difference between the
a tank of compressed air is at 40 degrees c and 10 atm. 1 third of the gas is removed for inflating a car tire. the
a carefully controlled tensile test is conducted on a metal alloy specimen. the original diameter is 10 mm and the gage
initially an insulated rigid tank contains 28.5 kg of water at 23.4oc and 101 kpa. the tank also contains a 3.14 kg
a tank of 0.05 m3 volume air at 800 kpa absolute and 15 c. at t0 air begins escaping from the tank through a valve with
an ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid maintains a condenser at
1. what would be the percent change in deflection if a solid rectangular beam has its unsupported length changed from
1. What is a parting line or parting surface? 2. What is fluidity? 3. What type of shape modifications or allowances are generally incorporated into a casting pattern?
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