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An axial turbine of high hub-tip ratio runs with zero degree reaction and peak efficiency at design flow and speed. the nozzle exit angle is 70 degrees from the axial direction. Estimate (a) the percentage chain in toque accompanying a 20 percent drop in speed (from the axial direction) while operating with design mass flow. (b) the corresponding degree of reaction. Changes in density in the rotor may be considered negible under design and off-design conditions. The rotor exit relative flow angle may be assumed not to vary with shaft speed.
a bearing steel with 1.2 wt. c is analyzed for its microstructure after annealing heat treatment. a write down the
design of absorption column and the cooler process design of other units should be completed along with pipe sizes. the
a 2.9 kg collar is free to slide on a rough rod rotating in the horizontal plane. the collars radial position along the
consider air parcel moving upwards. a what will be the air parcels temperature be at 2 km altitude if the surface
a sample of tungsten w contains an edge dislocation. w can be treated as elastically isotro pi c and the dislocation is
determine the expressions for attractive and repulsive energies, EA and ER as a functions of r where r is in nm and E is in eV.
use potential flow theory to determine the lift coefficient of a spinning baseball in terms of the forward velocity v
polymorphs are distinct types of crystals that have the same composition. for example iron changes from bcc to fcc upon
The number-average molecular weight of a polypropylene is 1100000 g/mol. Compute the degree of polymerization.
this would provide you with a set of Reynolds numbers. Next, using the integral method, determine the velocity profiles within the boundary layer to be followed by determination of the heat transfer coefficient values for your selected Reynolds numbe..
what two outcomes characterize the response of an opaque surface to incident radiation? which outcome affects the
Finding exit velocity from air nozzle, Air enters a nozzle operating at steady state at 800 ºR with a negligible velocity and exits the nozzle at 570 ºR.
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