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1. Consider the Hoover Dam hydro-electric plant located in Arizona and Nevada. If the average lake level is 160 m above the turbine outlet, determine the minimum mass flow rate of water through the 17 turbines if the total power produced from all four turbines is 2080 MW. What is the mass flow rate if the turbines are 88% efficient.?
2. What is the possible power (kW) production from a 32 m radius wind turbine if the average wind speed is 12 m/s? Assume an ambient air density of 1.20 kg/m3.
when tomatoes are broken or crushed for processing into liquid products such as juice or sauce they must be heated
a heat pump cycle operates between a geothemial reservoir and your house. the cycle requires 200 kw to operate with a
heat treatment is common in processing semiconductor materials. a 200- mm-diameter silicon wafer with thickness of 725
the 30-mg freight car a and 15-mg freight car b are moving toward each other with the velocities va 20 kmh to the right
The piston is now unlocked so it is free to move, and it conducts heat so the air comes to a uniform temperature . Find the mass in both A and B, and the final T and P.
two blocks a and b are arranged with pulleys as shown. block a has an initial velocity t 0s to the left of va1.2 ms.
a spring on the incline ramp it tells u.... angle30 spring constant k2000 the distance it moves up the ramp after
A Pitot-static probe connected to a water manometer is used to measure the velocity of air. If the de?ection (thevertical distance between the ?uid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 k..
water flows in a horizontal pipe with entrance velocity 2.5ms is turning 90 degrees and leaves the pipe. pipe diameter
an open brayton cycle engine operates with a compressor-pressure ratio of 6 an inlet temperature of 20 c and inlet
Determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1
A rigid bar of mass m and length L is released from rest in the horizontal position. What is the rod's angular velocity when it has rotated through 90°?
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