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A steel rod 20mm diameter is passesthrough a brass tube 25mm internal diameter and 30mm external diameter. The tube is 1m long and is closed by thin rigid washers and fastened by nuts, screwed to the rod, the nuts are tightened untill the comppressive force in the tube is 5kN. Caluculate the stress in the rod and tube. Es=200GPa, Eb=80GPa.
consider a steam turbine in which the steam enters at 23.26 mpa and 808 k with a flow rate of 17.78 kgs. the steam
an airplane used to drop water on brushfires id flying horizontally in a straight line at 180 mih at an altitude of
a mixture of propane and butane is burned with pure oxygen. the combustion products contain 47.4 mole h2o. after all of
air flows at a constant velocity over a flat plate which is heated over the entire length at a fixed temperature. the
A 50 hp motor with an efficiency of 0.80 is to be replaced by a newer model motor with an efficiency of 0.90. The motor is expected to operate 3000 hours per year. The cost of electricity in our area is $0.06 per kWhr.
consider entropy balance equation for human engines. humans loose heat at the rate of 80 w from the body which is
a composite aluminium alloy e 72gpa and v 0.33 cylinder is made up of an inner cylinder with inner and outer
what is the rate of entropy generation in the turbine when steam enters an adiabatic turbine at 8mpa and 500oc at a
an air-conditioning system requires a 20-m long section of 15-cm diameter duct work to be laid underwater. determine
a piston cylinder device contains 1 kg of liquid water at 200kpa and 25oc. heat is added to the water in the cylinder
the heat flux passing through a plane wall of a well-insulated house is q 2.5 btuhr-ft2 when the temperature of the
a piston cylinder device having an initial volume of 2 m3 initially contains steam at 10 bars and 200oc state 1. the
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