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A leadscrew with a 7.5 mm pitch drives a worktable in a numerical control positioning system. The leadscrew is powered by a stepping motor which has 200 step angles. The worktable is programmed to move a distance of 120 mm from its present position at a travel speed of 300 mm/min. Determine.
(a) the number of pulses required to move the table the specified distance and
(b) the required motor speed and pulse rate to achieve the desired table speed.
Compare with the Moody chart and with Eq. (6.43).
calculate the work necessary to compress air in an isolated cylinder with initial and final volumes of 6.0 and 1.2 ft3
Understand mechanism of hardenability in steels by Jominy-end quench method - Samples have been heat treated using the following conditions: Austenitizing at about 900oC for 30 minutes, water spray from one end until the whole samples cooled down to ..
Air at a stagnation pressure 700kPa flows isentropic ally through a convergent-divergent nozzle. The design pressure at the nozzle exit is 56 kPa. If the back pressure is raised gradually, thereby creating a shock in the divergent portion of the nozz..
fully developed laminar flow occurs between two horizantal parralel plates. the distance between the plates is 0.25
The Cost of Recharging a Battery, A 12-V automotive storage battery is charged with a constant current of 2 amp for 24 hr.
what speed will the sleeve attain? The temperature oƒ the sleeve remains constant.
A cheap radial-vaned centrifugal fan is required to provide a supply of pressurized air to a furnace. The specification requires that the fan produce a total pressure rise equivalent to 7.5 cm of water at a volume flow rate of 0.2 m3 /s.
the wall of a heat exchanger receives a variable heat flux as shown in the figure. the heat flux is q dot of second
sixteen kg of air and two kg of helium gas are sealed in a rigid and insulated internal-piston-cylinder device.
Determine the force in member CH of the truss - Determine the forces in the marked members "F2 and F1" of the truss.
The specific volume of superheated steam is represented by pv 5 0.231(h 2 1943), where p is in kPa, v is in m3 /kg, and h is in kJ/kg.
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