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A short column is made by nailing four 1 X 4-in. planks to α 4 X 4-in. timber. Using an allowable stress of 600 psi, determine the largest compressive load P that can be applied at the center of the top section of the timber column as shown if
(a) the column is as described,
(b) plank 1 is removed,
(c) planks 1 and 2 are removed,
(d) planks 1, 2, and 3 are removed,
(e) all planks are removed.
Estimate the minimum window length L that will meet these requirements.
A magnetic flux of 400 microwebers passing through a coil of 1200 turns is reversed in 0.1 sec. Calculate the average value of the e.m.f induced in the coil.
Use the table on slide 11 of this lecture and determine the line parameters L and C of the transmission line. Consider that the TL is lossless and µ = µ0 for polystyrene. Then find the characteristic impedance of the line Z0, phase velocity
Show the design of a 2-1 Mux: (a) using a NAND/NAND implementation, (b) using a NOR/NOR implementation. Which would you prefer to build and why Assume that you have all variables and their complements available.
what happens when the electrical motor runs on different frequency from the designed for ex: an electrical motor is designed to run on 50 Hz frequency but the supply provided on 60 Hz , then what will be the consequences?
A 277/480V three phase wye system has the following load: M1- Induction Motor, 50hp, n=0.91, PF= 0.89 at full load. M2- Induction motor, 25hp, n=0.9, PF= 0.9 at full load. R- Heater Load, PF=1 M- A synchronous motor to drive a second 25hp load.
A teleoperated control system has an operator and a remote machine. The usual teleoperation system is based on a one-way link to the machine and limited feedback to the operator. However, the use of a two-way coupling will result in a better opera..
Explain the differences amonga truth table, a state table, a characteristic table, and an excitation table. Also, explain the differences among a Booleanequation, a state equation, a characteristic equation, and a flip-flop input equation.
1. Sketch the polar plot of the frequency response for the following loop transfer functions: Gc(s)G(s) = 1 / ((1 + 0.25s)(1 + 3s)) Gc(s)G(s) = 5(s^2 + 1.4s + 1) / (s - 1)^2 Gc(s)G(s) = (s - 8) / (s^2 + 6s + 8) Gc(s)G(s) = 20(s + 8) / (s(s +2)(s + 2)..
Determine the impulse response y(n) if the input x(n) = δ(n);
Calculate: Critical frequency for the input low pass network, and the output low pass network, estimate the values for Cbe, Cjc, Cbc, and Cje. Concider the resistance of the signal sourceRs to be equal to the 1 ohm resister in series with the source.
A shunt regulator utilizing a zener diode is biased on through a 100-ohm resistor. Determine the change in the regulated output voltage for the two situations below: a) VI changes +2.0 V, ILoad constant b) ILoad changes +100 mA, VI constant
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