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Suppose that a feedback control system (Figure P6.45) is expected to provide an accuracy within ±Δy for a response variable y. Explain why the sensor that measures y should have a resolution of ±(Δy/2) or better for this accuracy to be possible. An x-y table has a travel of 2 m. The feedback control system is expected to provide an accuracy of ±1 mm. An optical encoder is used to measure the position for feedback
in each direction (x and y). What is the minimum bit size that is required for each encoder output buffer? If the motion sensor used is an absolute encoder, how many tracks and how many sectors should be present on the encoder disk?
pin p is constrained to move along the curve defined by the lemniscate r 4 sin 2theta ft. if the angular position of
Water flows though a 20mm diameter pipe at 3L/min and static pressure of 100mmHG. What is the wall stress of the pipe. The pipe is 1.5mm thick.
five kg of water is contained in a piston-cylinder assembly initially at 5 bar and 240degc. the water is slowly heated
water vapor at 800 lbfin.2 1000 degrees f enters a turbine operating at steady state and expands to 2 lbfin.2 the mass
given the differential equation apxq2 d2ydx2bpxqdydx cy0 show that it can be transformed into another differential
a particular house wall consists of three layers and has a surface area of 30 m2. the inside layer is 10 mm thick and
1. Each of the following exercises requires evaluating the quality of a two-phase liquid-vapor mixture: (a) The quality of a two-phase liquid-vapor mixture of H2O at 40°C with a specific volume of 10 m3/kg is
the following data were observed in a step response experiment of a thermometer is under a step input from 0 degress c
A 380-liter tank contains steam, initially at 300 kPa and 400°C. A valve is opened and steam flows out of the tank at a constant rate of 0.005 kg/s. During this process, a heater keeps the temperature within the tank constant.
A stream of gas flowing at 15,000 scfm contains 20 ppm of toluene. Assuming the process operates 8500 hours per year, calculate the potential emissions of toluene, tons/year. What kind of a system should be considered to control this stream, and why?
Find the diameter of the connecting rod at its thinnest part, if the permissible tensile stress is 35 N/mm2.
The gun barrel has a mass of 500 kg and a recoil spring of 300 N/m. The barrel recoils 1 m on firing. Determine the (i) initial recoil velocity of the gun barrel, and (ii) critical damping coefficient of the dashpot engaged at the end of the recoi..
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