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A fossil-fuel steam power plant operates at about 50% of Carnot thermal efficiency. It has been suggested that the air pollution from a plant that operates at 1000 F would contribute 1/2 the pollution (per ton of coal burned) that the present system that operates at about 1500 F. The heat rejection temperature is 70 F. For the same electrical output what is the percent difference in the pollution resulting from the combustion?
determine the work done by a 1-lb fluid system as it expands slowly within a piston-cylinder arrangement from an
a 60-lb uniform thin panel is placed in a truck with end a resting on a rough horizontal surface and end b supported by
a cast-iron cylinder of 300mm bore carries a pressure of 30 newtons per squaremillimetre what should be its thickness
determine (a) the reaction at end A and B , (b) the minimum required cofficient of static friction at end A
convert the composition of the following alloy from atom percent to weight percent a 44.8 at of silver b 46.3 at of
Calculate the adiabatic flame temperature (at constant pressure) for ethane C2H6 in air
What is the nozzle-exit-to-throat area ratio for case (a)? The gross thrust is the contribution to engine thrust made by the exhaust nozzle only.
A 12 kN force is exerted on a rocker arm. The moment of inertia (I) of the crosssection with respect to the neutral-axis is 43.3x10-9 m4.
At a given instant in time, flywheel OA is caused to rotate with angular velocity of w=2rad/sec and angular acceleration of alpha=6rad/s2. determine the angular velocity of links AB and BC at this instant in time. AB=.5m, BC=.4m, OA=.3m
Draw the stress distribution along the walled thickness and discuss whether the composite with the applied pressure is safe or not by using von-Mises and Tresca theory.
the gate in the is hinged at H.the gate is 2 m wide and normal to the palne of the diagram.calculate the force required to hold the gate closed.
the y-component of the force f which a person exerts on the handle of the box wrench is known to be 320newton. determine the x-component and the magnitude of force.
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