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What is the efficiency of the turbine and the entropy generated per kilogram of steam? d) if the ambient temp is 25C and the ambient pressure is 1 bar.
A sphere is moving with speed v as shown, and it impacts the inclined face of a wedge. Determine the wedge angle, theta, as a function of L and e, the sphere's coefficient of restitution.
The other sample has a bit of dislocations. Which of the two samples would you expect is more likely to shatter when hit with a hammer? why?
Water flows through a horizontal section of 5cm diameter pipe. The pressure drop over 10m is 4kpa. What is the head loss coefficient k, and what is the Darcey-Weisbach coefficient?
Hollow cylindrical steel torsion bar of length 1.5 m, outside diameter 30 mm and inside diameter 24 mm is clamped at one end and the other end is twisted through an angle of 10 degrees.
At this point, a miner of mass 100 kg gets into the cage. How much further will the cage descend as he gets in, assuming there is no brake to prevent this motion.
If you were to heat a 30 at% Ni, composition, a 50 at% Ni composition, and an 80 at% Ni composition from 600oC, at what temperature would the first liquid form for each composition?
In a system a lever needs and effort of 200N to lift a load of 350N.the end of the lever arm moves 50cm and the load moves 20cm.
At what air speed should the model test be run? With all similarity conditions satisfied, the measured drag on the model was determined to be 187 N. What is the predicted drag on the prototype dish?
If the model tests are to be performed in a wind tunnel using standard air, what is the required air velocity in the wind tunnel?
A model of a submarine, 1 : 15 scale, is to be tested at 195 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater.
Air at 80F is to flow through a 2-ft pipe at an average velocity of 6 ft/s. What size pipe should be used to move water at 60F and average velocity of 3.2 ft/s if Reynolds number similarity is enfo
The electric resistance heater are running continuously but the air temperature in the room remains constant. The rate of heat loss from the room that day is?
Derive the eulerian form of the continuity equation by equating the rate of increase of the mass inside an infitesimal rectangular parallepiped to the rate at which mass flows into the paralellepip
Gasoline has a lower heating value of 44000 kJ/kg and a density of 0.75 g/cm3. Determine the thermal efficiency of your car engine.
Metal Y has a higher coordination number than Metal X due to its crystal structure. Based on this information, which of the two metals would you expect to show larger ultimate tensile strength? why?
There are no significant kinetic and potential energy effects. (a) Show the process on a sketch of the P-v diagram (b) Evaluate the work and heat transfer (in kJ).
A mass weighing pounds, attached to the end of a spring, stretches it inches. Initially, the mass is released from rest from a point inches below the equilibrium position.
From environmental considerations, the temperate of the river downstream can be no more than 72 F. Determine the maximum theoretical power that can be developed, in MW, subject to this constraint.
Determine: a) the rate at which is discharged to the cooling water, in BTU/h b) the minimum theoretical rate at which energy could be discharged to the cooling water, in Btu/h.
The cycle rejects energy by heat transfer to cooling water at a lower temperature of 300 K. If there are 100 cycles per minute, what is the minimum theoretical value for T in K.
A well sealed room contains 60 kg of air at 200 kPa and 25 deg C. Now solar energy enters the room at an average rate of 0.8 kJ/s while a 120 W fan is turned on to circulate the air in the room.
The deformation in the column caused by a temperature increase of 50°F. d. If the temperature changes as noted in question C, will the average axial stress of question b change? Why?
Determine the amount of heat, Qcomb, needed to raise the temperature of the system from T3 = 700 K to T4 = 1300 K. Express the amount of heat in terms of kW as well as kJ/kg of air flowing through t
In a model AC generator, a 512-turn rect- angular coil, 9 cm by 15 cm, rotates at 60 rev/min in a uniform magnetic field of 0.58 T.