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Air is expanded in an adiabatic turbine from an inlet state of 1800 kPa and 300oC to an outlet pressure of 200 kPa. what is the outlet temperature of the air?
A beam has a solid square cross section of 100 mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam.
What is the Ymax, total distance traveled and the time at ymax and time at the total distance traveled(x distance)?
Determine the heat transfer coefficient on the surface of the sphere, i.e. h. Is the assumption of a lumped mass justified?
What is the rate at which energy is emitted by the surface via radiation? What is the net rate at which radiation is exchanged between the surface and the chamber walls?
The air temperature is 20 C and the heat transfer coefficient in the air is only 50 W/(m 2 - m). What is the surface temperature of the heater in this case?
Determine the heat flux from the room into the refrigerator if the convection coefficients are h = 5 W/(m 2 -K) on both the interior and external surfaces of the sheet metal panels.
The air is supplied to the burner at 600 K. The gaseous products of complete combustion leave the burner at 1100K. Determine the required heat transfer in kJ/kmole of fuel.
Compute the number of free electrons per cubic meter for silver at room temperature. Compute the number of free electrons per silver atom.
If a section of concrete is poured for a road and the engineer leaves no gap between sections poured before and after the section, what will happen to the concrete if the temperature varies from 0 C
Two clockwise rotating point vertices of strength 8 ft^2/s are located at (0,0) and (0,3) at a given instant (a) find their location after 1.0 s (b) if the sense of the vortex at the origin is reve
Assuming both air flows to be steady, inviscid and incompressible, and neglecting body forces and weight of the cylinder, determine the magnitude and direction of the net force acting on the cylinde
Determine the location of the stagnation point xo as a fucntion of V and m. (b) Determine the static pressure variation along the wall as function of x (c) sketch the resultant pressure distribution
If the coefficient of friction is 0.3, how long does it take the blocks to come to rest? what is the maximum velocity of B? A's mass of 50 kg and B mass of 30kg.
It is then machined down to a 80mm diameter determined the difference in angular momentum. Assume the wood weighs .00084 kg/cm3.
A pulp and paper machine has a roller that has a mass of 400 kg and a mass moment of inertia about its center of rotation of 30kgm2.
A spring is initially compressed 50 mm by a force, P. if P is increased by 250 N thereby causing a total spring compression of 150 mm what is the spring constant.
A torque of 40Nm is applied to a 100 kg armature of an electric generator for 3 seconds. If the speed increase is 400rpm determine the radius of gyration of the armature.
If the coeffiecient of firction is 0.3 how long does it take the blocks to come to rest. what is the max velocity of the 30kg block.
Using psychrometric chart, determine a. the relative humidity b. the humidity ratio c. the enthalpy d. the wet-bulb temperature e. the water vapor pressure.
The nitrogen is now allowed to cool at constant pressure until the temperature drops to 77 degrees celcius. U sing data from the nitrogen tables determine the heat transfer.
Determine (a) the power input to the compressor, in kW. (b) the heating capacity of the system, in kW and tons. (c) the coefficient of performance. (d) the isentropic compressor efficiency.
The overall efficiency of the turbine-generator is 80 %. Disregarding frictional losses in piping, estimate the electric power output of the plant.
Five kg of water contained in a piston-cylinder assembly expand from an initial state where T1=400 C, P1=700 kPa to a final state where P2=300 kPa. If this is done during an adiabatic process with i
Neglecting kinetic and potential energy effects and ignoring heat transfer from the outside of the condenser, determine the volumetric flow rate of the entering cooling water.