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In a metal processing facility, the final tailings slurry produced by the process is thicken in a caisson and thickener and pumped out of for disposal. The density of the slurry that leaves the thickener must be maintained at a set point of 75%. Proximity switches are installed on the outlet pipe is either open or closed. The pump drive for pumping the slurry out of the thickener is 3Ph ac induction motor variable speed drive rated at 150kW, 415V, 50Hz. The speed of the 150kW pump drive is controlled by by the density of the slurry in the pipe. using a block diagram show the control loop for thr mention process
A P=900W electric motor with pf=0.82 lagging is connected to a 240 Vrms 60 hertz source. a) Draw an equivalent circuit showing impedance and phasor values for Vs, R and X. b) Find an Xc value to put in parallel with the motor which corrects the pf to..
a resistace heating element fed from an AC bus is controlledby an AC ( semi-conductor ) switch with integral half cyclecontrol. the base period is 20 half cycles of the AC supply.determine the number of half cycles
A full-wave rectifier circuit having centre-tapped transformer has 500 turns in its primary winding, 25 turns from one end of the secondary winding to the centre tap and 20 turns from the other end of secondary winding to the centre tap.
A 3.5inch floppy disc has a nominal capacity of 2 MB. Note that there are eight bits to a byte. Estimate the area of magnetic material allocated to each bit of information. Clearly state any assumption made and carefully note any measured quantiti..
Design a phase-lag compensator G_c(s) such that the static velocity error constant K_v is 50 sec^-1 without appreciably changing the location of the original closed-loop poles, which are at: \(s = -2 \pm j\sqrt{6}\)
To support the wheelbarrow in equilibrium, the man's hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the pape..
A three-phase, wye-connected, 220-V, 10-hp, 60-Hz, six-pole induction motor has the following parameters in ohms per phase referred to the stator: R1 = 0.294; R2 = 0.144; Xn = 0.503, X12 = 0.209;XM = 13.25.
Why Can Discrete-Time FIR Digital Filters be a Linear Phase, Why can discrete-time FIR digital filters be made exactly linear phase, whereas IIR digital filters cannot?
Design a four-bit shift register with a paralel load, usingD-flip-flops. There are two control inputs:shift and load. Whenshift t=1, the contents of the register are shifted by oneposition. New data are transferred into the register when load=1and..
Write a program in C that reads 20 integers from the user and sums the odd numbers together and the even numbers together. The program is to output the ratio of the odd numbers to the even numbers with a precision of up to 3 decimal digits.
Using the Internet, a magazine, or a provided list of memory modules, determine the exact part numbers and quantities of memory modules that you would buy. List them with the location of where you obtained the information.
two charges of equal sign and magnitude are placed on metal conducting spheres. charge q1 is fixed, while the sphere holding q2 is suspended by a thread from point A.if q1 = q2 =1 µC and θ = 40"
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