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Speed control of motors (ac motors as well as dc motors) can be accomplished by using solid-state switching circuitry. In one such method, a solid-state relay is activated using a switching signal generated by a microcomputer so as to turn on and turn off the power into the motor drive circuit at high speed. The speed of the motor can be measured using a sensor such as a tachometer or optical encoder. This signal is read by the microcomputer and is used to modify the switching signal so as to correct the motor speed. Using a schematic diagram, describe the hardware needed to implement this control scheme. Explain the operation of the control system.
How do I calculate isentropic efficiency of a steam turbine when I know the inlet and outlet conditions?
Write a project lab report about the given structure. I need some one to write a final project lab report. In the attachment you will find the experiments we have done in this class, also you will find photos of the final product that we have done.
A force P in the xy-plane acts on the triangular plate. The moments of P about points O, A, and B are MO =80 N · m counter clockwise, MA =200 N · m clockwise, and MB =0. Determine P.
the shaft of a gearbox is coupled through a no. 60 chain drive rotating a concrete mixer at 180 rpm clockwise. the
a steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters
Draw and label the free body diagram for the beam. Calculate the support reaction forces at A and B. Draw the shear force and bending moment diagrams.
a model of an airplane is to be tested at 20degc in a wind tunnel. the model is built to 112th scale. in order to match
Using the Internet, identify at least five medical applications of MEMS technology. In each case, explain the scientific and technological basis for the application, discuss the state of current research, and determine how close the technology is ..
SteelCo's best customer currently buys 200 of these rods each day and pays the company $20 apiece. However, it gets a $40 refund for each rod that doesn't meet specifications. What is SteelCo's current expected profit per day? How small would its ..
consider a one-dimensional plane wall with constant properties and uniform internal generation qdot. the left face is
a steam power plant operates near a river triver27degc. and uses the river as a temperature reservoir into which it
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
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