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In the physical aliasing demonstration, the small DC electric motor rotated the wheel at 1500 RPM.
a) What would be the Nyquist frequency in RPM for the rotation of the wheel?
b) The wheel was driven by a wheel with 40 tooth gear in contact with a 12 tooth gear on the motor’s shaft. How fast was the motor turning?
a 230-v shunt motor develops a torque of 40 ib-ft when the armature current is 11 a. find the torque developed when the
a wind-turbine generator is designed to produce 3.5 x 106 kwhr per year with an annual plant factor of 0.40. the design
the pilot of an airplane carrying a package of mail to a remote outpost wishes to release the package at the right
a refrigerator consumes 280 w of electric power when it is running. the cost of electricity is 10 cents per kwh. what
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dry air at 32degreec flows over a wetted water plate of 0.2 m2 area. the average convection coefficient is h 20 wm2
heating up water for your morning shower provides an excellent example of heat exchange and mixing that you control.
If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 85 km/h?
Draw a free-body diagram that identifies all the forces acting on the block in motion.
an insulated mixing chamber receives 4 lbms r-134a at 150 lbfin.2 220 f in a line with low velocity. another line with
initially an insulated rigid tank contains 3.73 kg of water at 240oc and 1 mpa. a heater in the wall of the tank
consider a carnot refrigeration cycle with a working fluid of r-134a operating between temperatures of -10oc and 20oc.
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