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The combustion gases (modeled as air) enter a turbine at 6atm, 1000K and exits at 1atm, 500K. Determine the isentropic efficiency if heat is transferred away from the surface at a rate of 10 kJ/kg at an average surface temperature of 350K.
electric space heaters for home use commonly utilize a ceramic filament as the heating element. list the mechanical
a steam turbine operates with 1.6 mpa and 350o c steam at its inlet and saturated vapor at 30o c at its exit. determine
five kilograms of saturated water vapor is contained in a closed rigid tank at an initial pressure of 4 mpa. the
the disk is horizontal and turns so that d thetadt ct about the vertical. forces cause a marble to move in a slot
race cars often use wings in an effort to increase cornering speeds. the wings provide an extra downward force that
A spherical balloon inflated sos that the volume is increasing at the rate of cubic meter/min. At what rate is the diameter increasing when the diameter is 12 m?
a specimen of a 4340 steel alloy having a plane strain fracture toughness of 45 mpa m is exposed to a stress of 1000
find a) velocity distribution in the film b) shear stress distribution c) volumetric rate of flow d) average velocity. assume the flow is steady and laminar.
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.
a frictionless piston cylinder device with a set of stops contains .5m3 of saturated h2o vapor at 200 kpa. at this
an airplane moves forward at a speed w1 971 kph. the frontal intake area of the jet engine is a1 0.8 m2 and the
a gas mixture consists of o2 and n2. the ratio of the mole numbers of nitrogen to oxygen is 31. this mixture is heated
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