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The rectangular beam shown is made of a plastic for which the value of the modulus of elasticity in tension is one-half of its value in compression. For a bending moment M = 600 N.m, determine the maximum (a) tensile stress, (b) compressive stress.
a three-phase 60 hz transmission line has the following parameters r 0.25 ohmsmi x 1.0 ohmsmi and y 5.0usmi. the
A 750-N.m torque is applied to a hollow shaft having the cross section shown and a uniform 6-mm wall thickness. Neglecting the effect of stress concentrations, determine the shearing stress at points a and b.
if we have a circuit with R= 5, L=22mH, C=22nF , Vs=10 and the switch S was opens for a long time and it closes at time t=0 second. all connected in series, how can i find the voltage in the capacitor Vc
A lossless transmission line with the electrical length of l = 0.3 lamda and the characteristics impedance of Z0 = 75 is terminated with a complex load ZL = 30 -j20 calculate the reflection coeficient at the load, the SWR on the line
A composite analog signal is given in the following expression: x(t)=1.2 sin(2pi60ft)+0.0001cos(2pi1ft) -If this signal was sampled at 1000 Hz, derive the expression for the sampled sequence x[n] with n being the sampling index.
An amplifier has a power gain of 3dB and an input signal power P(In) = 100mW. What is the output power level A tank circuit coil is operating at a resonance frequency f(res) = 20 MHZ; The circuit must operate with a bandwith of 200 KHZ.
the chopper controls a dc machine with an armature inductance of 0.2mh. the armature resistance can be neglected. the
youve just been hired as a process engineer at a major silicon chip manufacturer and your boss gives you a first
Design a sine wave oscillator using the op-amp that provides the output signal with amplitude of 4V to 6.5V and a frequency of 1kHz.
The distillation column shown in the drawing is used to distill a binary mixture. Symbols x, y, and z denote mole fractions of the more volatile component, while B, D, R, and F represent molar flow rates.
A person shuffling across a dry carpet can be approximately modeled as a charged 100-pF capacitance with one end grounded. If the person touches a grounded metallic object such as a water faucet, the capacitance is discharged
A 20-hp, 250 V shunt-DC motor has an armature circuit of 0.22 ohms and a field resistance of 170 ohms . At a low-load, the speed is 1200 rpm and the armature current is 3 A. At full-load, the current is 55 A, and the flux is reduced by 6%
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