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A stepping motor has 200 step angles. Its output shaft is directly coupled to leadscrew with pitch = 0.250 in. A worktable is driven by the leadscrew. The table must move a distance of 5.00 in from its present position at a travel speed of 20.0 in/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 specified table speed.
Obtain a new solution, and determine whether any buckling constraints are active. If no buckling constraints are active for L = 10 in., re-run the analysis by increasing L , and estimate the value of L at which at least one buckling constraint b..
consider the steady operation of a refrigeration package for a shipping container on a train truck or ship. the package
A lap joint needs to be designed using 20-mm diameter bolts to carry a load of 120 kN on the connecting plates. If the shear stress in each rivet is not to exceed 90 MPa, determine the number of bolts needed.
a water balloon launcher uses two bungee cords each of effective spring constant 125 nm stretched a distance of 0.8 m
An axial-flow turbine stage is to be designed for free-vortex conditions at exit from the nozzle row and for zero swirl at exit from the rotor.
natural gas at 70 f and standard atmospheric pressure of 14.7 psi is compressed isentropically to a new absolute
determine the radius of the crank r and the speed n of a slider crank mechanism used in a shaker table. it is required
a double acting cylinder with a single rod must produce a thrust of 80kn and move out with a velocity of 3mms on the
Estimating fractions of a cost, Estimate what fraction of the price of a pocket calculator is required to cover the cost of developing the product.
The compressor pressure ratio is 10, and the turbine inlet temperature is 1400K. For k=1.4, calculate: (a) the thermal efficiency of the cycle (b) the back work ratio (c) the net power developed, in kW
A steel rod of radius 0.01 m and length 2. M is pulled on with a tensile force of 200,000 N, and the bar stretches to a length of 2.08 m. The radius of the bar is reduced to 0.0099 m. Determine the stress, strain, Young's modulus (E), and Poisson's r..
Sketch a flow net for the situation shown in Figure 8.7, and calculate the total discharge. Compare the result with the estimate made at the end of that chapter.
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