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Air (assumed incompressible) flows across the rotor shown in Fig. P12.2 such that the magnitude of the absolute velocity increases from 15 m/s to 25 m/s. Measurements indicate that the absolute velocity at the inlet is in the direction shown. Determine the direction of the absolute velocity at the outlet if the fluid puts no torque on the rotor. Is the rotation CW or CCW? Is this device a pump or a turbine?
design 2-shell pass and 8-tube pass heat exchanger for heating ethyl alcohol from 25degc to 70degc at a rate of 2.9
in a tensile test for an alloy used for ballistic-missile launch tubes on boomer submarines the yield strength was
A defender has been in use for seven years and has negligible salvage value. Operating costs are €40 0 per year for electricity. Once every five years it is overhauled at a cost of €1000.
Two standard gears in mesh have 48 and 102 teeth, respectively. Their diametral pitch is 10, and the pinion rotates at 60 rpm cw. Determine the center distance between the gears, the pitch diameters, the circular pitch, the pitch line velocity, the l..
In an interview for a manufacturing engineering position, you have been told that a certain product was not performing as intended and that changes needed to be made to a few of the features on the component such as shaft sizes and hole dia..
If you could measure the magnetic and electric fields of an antenna in the near field, could you tell the difference between a loop antenna and a linear dipole antenna? How?
How many grams of BaO can be added to 1 kg of SiO2 before the O:Si ratio exceeds 2.5 and glass-forming tendencies are poor? Compare this with the case when Li2O is added to SiO2.
Is it possible with the data given in Problem 14.24 to find the exact location of the leak?
Fluid Statics: Submerged Submarine, A submarine is at a depth of 2000 ft from the water surface. The atmospheric pressure above the water is at 14.7 psia
A vapor-compression refrigeration system, using ammonia as the working fluid, has evaporator and condenser pressures of 30 and 200 lbf/in.2, respectively. The refrigerant passes through each heat exchanger with a negligible pressure drop.
Find the longitudinal component Hz(x,y, z) for a backward-propagating TE wave in a rectangular waveguide. Assume lossy propagation in the negative z direction and the amplitude of the wave is H1.
Saturated steam at 230 degrees F, 20.78 psia and 19.386 ft cubed per pound of mass enters a compressor with an internal energy of 108.26 Btu/lb of mass and is compressed to 80 psia. the mass flow rate is 50 lb mass per hour. Heat loss from the compre..
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