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The gas-turbine powered Plymouth ion built in 1960 had a turbine inlet temperature of 926 C, a pressure ratio of 4,and inlet conditions of 15 C, 0.1 MPa. solve using cold and standard-air assumption
Oxygen gas is compressed in a piston-cylinder device from an initial state of 0.8 m3/kg and 25oC to a final state of 0.1 m3/kg and 287oC. Determine the entropy change of the oxygen during this proc
The weight of all other links is negligible. At the instant shown, determine the torque required from the motor to operate the compressor.
An incompressible Newtonian fluid flows steadily between two infinitely long, concentric cylinders of radius ri and ro, for the inner and outer cylinders, respectively. Outer cylinder is fixed and t
Using the productivity rate of 0.013 labor hours per sq. ft. and a productivity factor of 0.95, determine the number of labor hours required to install the ceiling.
Determine the exit velocity of the stream (ft/s) and the mass flow rate (lbm/s) of the steam at the nozzle entrance if the nozzle exit area is 0.01ft^2.
A hemisphere shell with mass m and radius R rests on a horizontal table. At the top of the shell there is a hole. The shell is filled with a liquid with density ?.1 up to height h<R, The air has
If the ambient temperature is 10 OC, determine the rate of heat transfer from the steam to the surroundings over a 100 m length of pipe.
A 3/16 in. thick acrylic testing box with dimensions of 10.0 in. x 10.0 in is covered with an unknown 0.50 in. insulation material. Determine the thermal conductivity for the insulating material if
Suppose that you are designing an unpowered race car for the annual downhill derby. you have a choice of wheels, such as thin disc wheels or solid spherical wheels.
In an ammonia refrigeration plant, 2 kg/min of ammonia enters the compressor at 1.902 bar and 0.96 dry. Calculate the volumetric flow rate of ammonia entering the compressor in m3/min.
A simple ideal Brayton cycle with air as the working fluid has a pressure ratio of 11. The air enters the compressor at 300 K and the turbine at 1200 K. Calculate the energy supplied by heating, ene
Determine the force in each of the members connecting joint A through F of the vaulted roof truss shown. State whether each member is in tension or compression.
A shell-and-tube heat exchanger consisting of one shell pass and two tube passes is used to transfer heat from an ethylene glycol-water solution (shell side) supplied from a rooftop solar collector
1 kg of steam occupies a volume of 0.2 m3 at 9 bar in a closed system. The steam is then heated at constant pressure until the volume is 0.3144 m3. Calculate the initial dryness fraction.
Calculate the amounts of ferrite, cementite, primary microconstituent, and pearlite in the following steels: (i) 1015, (ii) 1035, (iii) 1095, and (iv) 10130.
A house is to be maintained at 23 degrees C when the outside temperature drops to zero degrees C. The House, which loses heat at rate of 800 KJ/min, is heated by electric resistance heaters. Determ
Determine (a) the time to make one pass across the surface, and (b) the maximum material removal rate during the cut.
An insulated piston-cylinder device contains 2Kg of saturated liquid water with an electric resistance heater in the water inside the cylinder. The water remains at a constant pressure of 120KPa as
Assume that the cutting tool moves from the outer diameter of the workpiece to exactly the center at a constant speed. Determine the velocity of the tool as it moves from the outer diameter toward
In an orthogonal cutting experiment, with a 10-degree rake angle cutting tool, the chip velocity was measured to be 80% of the cutting speed. Determine the shear angle.
The current I(t) flowing in a RLC circuit with R=11ohm, L=0.1H, C=10^-2F and the source voltage E(t) = 110sin(377t) becomes steady state at time 5s. Find out the steady state current flowing in the
In an orthogonal cutting operation, the chip velocity was determined using a Laser Doppler Velocimeter (LDV) as 80 % of the cutting speed. A tool of zero degree rake angle was employed in the cuttin
A large stationary diesel engine produces 15MW with a thermal efficiency of .4. The exhaust gas which we assume is are, flows out at 800K, and the intake is 290K. How large is the mass flow rate? C
The cable is made of steel. What diameter should tar cable b so that the material does not exceed 50 percent of it's tensile strength? Value of tensile strength is 500X 10^6 N/m^2