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A wind tunnel with a test section 1 m = 2 m is powered by an axial fan 1.5 m in diameter. The velocity in the test section is 20 m/s, and the rotational speed of the fan is 2500 rpm. Assuming negligible losses in the tunnel and a performance curve for the fan defined by Fig. 12.13:
(a) Calculate the power required to operate the fan.
(b) What is the pressure rise across the fan?
how much does the company have to pay the bond holders?
magnetic tape is being fed over and around the two light pulleys which both rotate about fixed axes. if the speed v of
If the weather report says that it is 60°F outside, the barometric pressure is 28.50 in Hg, and the relative humidity is 85.0%, find the following values. The partial pressure of water. The mole fraction of water vapor in the air
a 20kg uniform cylindrical roller initially at rest is acted upon by a 90n horizontal force. knowing the body rolls
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a gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processesprocess 1-2
Determine the smallest force that must be exerted by the hydraulic cylinder on joints B and E if the drum is not to rotate.
a double pipe heat exchanger serves as an oil cooler with oil flowing in one direction through the inner tube and
If the bar begins to slip when () = 25°, determine the coefficient of static friction µ,s between the bar and the platform. Neglect friction in the roller and the small thickness of the platform.
Two parallel plates separated by 15 cm move with a relative velocity of 5 m/s.How much force per unit area is required to maintain the velocity difference if the fluid separating the plates
A continuous weld is to be made around the circumference of a round steel tube of diameter = 6.0 ft, using a submerged arc-welding operation under automatic control at a voltage of 25 V and current of 300 A. The tube is slowly rotated under a stat..
Steam at 140 lbf/in.2, 1000°F enters an insulated turbine operating at steady state with a mass flow rate of 3.24 lb/s and exits at 2 lbf/in.2 Kinetic and potential energy effects are negligible. Determine the maximum theoretical power that can b..
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