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Water is being pumped from a large lake to a reservoir 25m above at a rate of 25 L/s by a 10kw (shaft) pump. If the irreversible head loss of the piping system is 5 m, determine the mechanical efficiency of the pump.
a piston-cylinder assembly initially contains 0.5 m3 of air at 102 kpa and 90oc. the air is now compressed to 0.2m3 in
in a machining operation an 8 minute tool life was achieved at a cutting speed of 500 fpm. at a cutting speed of 250
use entropy balance for a closed system to determine whether the entropy change of the following processes is positive
a 3-phase 25 kva 208 v 60 hz alternator generator is operating under balanced conditions and supplies a current of 20 a
consider a carnot refrigeration cycle with a working fluid of r-134a operating between temperatures of -10oc and 20oc.
water flows as two free jets from the tee attached to the pipe shown below. thenbspexit speed is 15 ms. if viscous
the acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of
a pistoncylinder contains water with quality 75 at 200 kpa. slow expansion is performed while there is heat transfer
a pitcher on the umassd baseball team throws a 5 oz baseball with a diameter of 3 inches at a speed of 180 miles per
a new containment vessel for nuclear waste is being tested by a group of engineersnbspworking for the u.s. department
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr.
argon enters an insulated nozzle at 3.0 bars 1200k 10 ms and exits at 1 bar 800k. for steady state operation determine
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