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(a) Discuss possible sources of error that can make open-loop control or feedforward control meaningless in some applications.
(b) How would you correct the situation?
a battery can be modeled as an ideal source with an internal resistance - a constant voltage source with the resistor
descriptive questions - give brief answers in words. no calculations are required. you may write your answers in point
a solid cylinder of mass m 5 kg and radius r 20 cm is mounted on a frictionless horizontal axle over a well. a rope
determine the weight and cost of prepeg required to produce a hollow composite tube outside diameter 50mm wall
a first-order system is subjected to a harmonic input of 3hz. the system has a time constant of 0.5s. calculate the
Air flowing at 23 kg/s enters a nozzle operating at steady state at 450 K, 300 kPa and a velocity of 2 m/s and exits at a temperature of 300 K and a velocity of 400 m/s. Using the ideal gas model for air, determine (a) the area of the inlet in m2 and..
An airplane weighing 70000 lb is in a cruise flight (constant altitude, constant velocity, level flight) at an altitude of 30000 ft, with a velocity of 0.5 Mach. Its wing area is 4000 ft2. Given the drag polar of the airplane as CD=CD,0+0.05CL2; CD,0..
an elevator is created by using a hose hanging from the top of a 10 m building. the hose is diverted into 4 jets at the
Canal effect figure shows an anchored barge that extends across a canal by distance d = 30m and into the water by distance b = 12m. The canal has a width D = 55m, & water depth H = 14m, and a uniform water-flow speed vi = 1.5m/s.
saturated water vapor at 400? is heated at constant pressure until its volume has doubled. determine the final
steam with 88.6% quality and a flow rate of 750 kg/s enters a condenser operating @ 75 KPa. Saturated liquid leaves the condenser. How much heat is rejected to the cooling system.
a basketball of mass 0.570 kg is dropped from rest from a height of 1.25 m. it rebounds to a height of 0.734 m. a how
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