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Consider two actual power plants operating with solar energy. Energy is supplied to one plant from a solar pond at 80°C and to the other from concentrating collectors that raise the water temperature to 600°C. Which of these power plants will have a higher efficiency? Explain.
A rocket nozzle has a chamber pressure of 20 Bar (2 MPa) and a chamber temperature of 2750 K. The rocket is designed to operate isentropically at 12,500 m altitude. Note that the pressure at 12,500 m can be estimated using this equation P/P0 = exp [-..
the 20 mm diameter steel rod bc is attached to the lever ab and to the fixed support c shown in fig 9. the uniform
a space is at a temperature of 75 f 24 c and the relative humidity is 45 percent. find a the partial pressures of the
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
1 kg of water executes a cycle in a piston cylinder assembly starting out at high t 300 deg c and high p 15 mpa. the
a fan with 1-m-diameter blades moves air at 20degc at sea level. the fan produces a volumetric flow rate of 942 m3min.
if a vsdmotor combination has a torque of 100 n.m at the rated speed and full power what is the maximum torque it can
for a piece of aluminum stock choose a grinding wheel that will grind .050 of stock from it. show the grinding wheel
a steel disc 300 mm diameter of mass 29kg is suspended from the end of a wire 2.5 mm diameter and 1.5 m long which is
a chromel-alumel thermocouple junction which can be approximated with a sphere has an effective diameter of 1 mm. it is
a cruise ship is traveling at a speed of 24.0 . a speedboat with a late passenger is heading toward the cruise ship at
A 60 ohm, 40 ohm, and 20 ohm resistor are each connected in parallel across a 120VAC source. What is the total current.
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