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Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 60 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 2100 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. For a regenerator effectiveness of 85%, determine
(a) the net power developed, in MW.
(b) the rate of heat addition in the combustor, in MW.
(c) the thermal efficiency of the cycle.
a copper specimen is cold worked at room temperature and annealed at 100-400c. draw schematic sketches showing how
a concentric cylinder viscometer may be formed by rotating the inner member of a pair of closely fitting cylinders. the
air is contained in a vertical piston-cylinder assembly by a piston of mass 50 kg and having a face area of 0.01 m2.
a fire hose needs to deliver 25 ls of water to a maximum height of 50 m above ground level. a find the stagnation
15000 monodisperse particles are released simultaneously and allowed to settle in still air for 5 min. if the particles
Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the radius of the Be atom is 0.1143 nm, (a) determine the unit cell volume, and (b) calculate the theoretical density of Be.
problem i. steam at 5.0 mpa 500 degrees c enters an insulated turbine operating at steady state with a mass flow rate
Niobium forms a substitutional solid solution with vanadium. Compute the weight percent of niobium that must be added to vanadium to yield an alloy that contains 1.55 x 1022 Nb atoms per cubic centimeter. The densities of pure Nb and V are 8.57 an..
drag measurements were taken for a sphere with a diameter of 5 cm moving at 4ms in water at 20 degrees celsius. the
the environment in a certain area is 15 degrees c. plot the maximum efficiency of a nuclear power plant as a function
a 2.9 kg collar is free to slide on a rough rod rotating in the horizontal plane. the collars radial position along the
Use a suitable method to predict the racS,T variation along these plates when a= e= 0.1, 0.5, and 0.8 and emissions and reflections are diffuse.
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