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1. Calculate the angle of twist θ a 4-in.-diameter solid steel shaft 20 ft long. The shaft is subjected to a torque of 40,000 lb-in.
2. A 1-in.-diameter solid steel shaft, 60 in. long, was tested in a large torsion machine. An angle of twist of 5° was measured when the shaft was subjected to a torque of 1700 lb-in. Calculate the modulus of rigidity G.
the lower end of the 30 kg slender rod is displaced a small amount and released from the rest. determine the natural
a disk has a mass of 4kg and a radius of 90mm, it is at rest when it is placed in contact with the belt, which moves with a constat speed (v =15m/s). knowing that friction is .25 between the disk and the belt. Determine the number of revolution by..
a heat pump absorbs heat from the cold outdoors at 3 c and supplies heat to a house at 20 c at a rate of 30000 kjh. if
an inventor claims to have devised a refrigeration cycle that at steady state requires a net power of .8 hp to remove
Assuming no heat transfer through the walls, determine the rate of increase of the energy content of the room when all of these electric devices are on.
i water vapor enters a turbine at p1 5 bar t1320oc and exits at p2 1 bar. the work generated is measure as 250 kj per
the overall total-to-total efficiency and total-to-static efficiency assuming the steam enters the condenser with a velocity of 200 m/s;
The vapour has 5 K of superheat at entry to the compressor.In each case calculate the C.O.P.(ref.) and the refrigerating effect per kg. What would be the C.O.P.(ref.) of a reversed Carnot cycle operating between the same saturation temperatures?
part-1suppose that a simple pendulum is attached to our spring-damper-mass system. a simple schematic of the model is
Check for time of concentration, tc, value and if it is unrealistic, adjust the K value in the model noting that the K value can be as high as 50 or 60. Provide a graph of the hydrograph you obtain along with a tabular summary of your outputs.
cylinder a and cylinder b contain 0.07 grams of helium and 0.4 grams of oxygen respectively. each of these gases is
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
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