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U.S. Cenus Bureau statistics show that the annual earnings for persons with a high school diploma are $35,220 versus $57,925 for someone with a bachleor's degree. If the cost of attending college is asumed to be 30,000 per year for 4 years and the forgone earnings during those years are assumed to be $35,220 per year, what rate of return does earning a bachelor's degree represent? Use a 35 year study period. (Hint: The investment in years 1 through 4 is the cost of colelge plus the foregone earnings, and the income in years 5 through 35 is the difference in income between a high school diplima and a bachelor's degree.
A process has the dynamics G(s)=5/s^2. Design a unity negative feedback controller of the form G.c(s)=Ks+1 for a step response exhibiting approximately 15% overshoot.
The nameplate on a 50-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV: 78-kV. An open-circuit test is conducted from the low-voltage side, and the corresponding instrument readings are 8.0kV, 62.1A, and 206kW.
For a symmetric dielectric slab waveguide with the following parameters: n2 (core)=1.7, n1 (cladding) = 1.6 Calculate the range of core thickness such that the waveguide supports TE0/TM0 and TE1/TM1 modes but not TE2 modes.
1. What is the step response equation for charge time 2. How to determine the current in RLC circuit using the osciscope 3. List three reseasons why the measured value and pspice value for tau are different.
1-for an FM reciever tuned to 94.5 MHZ using high side-injection and a first IF of 10.7 MHZ, Determine the image frequency and the local oscillator
A 50 ohms lossless transmission line is to be connected to a load of 25 ohm. Use a lamda/4(quarterLamda) length of line of unknown impedance between the load and the 50-ohm line to match it,
If the motor is driving a load whose torque requirement remains constant at 3Nm, independent of speed. Calculate the armature voltage Va to be applied in steady state, if the load to be driven at 1500RPM.
Calculate in polar form the sequence components of unbalanced lineto-neutral voltages and calculate in polar form the phase currents corresponding to the sequence components
The voltage across a 0.2 H coil is given. What is the sinusoidal expression for the current?
Consider an electron in a cubic crystal of a semiconductor material. Such an electron is free to move throughout the cubic volume of the crystal, but cannot escape outside the cube. It is trapped in a three-dimensional infinite potential well.
As speed increases, the lower lamp, L1 lights, then L1 and L2, then, L1, L2, and L3, until all lamps light at the highest speed. Once all the lamps illuminate, no further increase in speed will have any effect on the display.
A clever student notices that a high constant loop gain would make the PLL converge in frequency and phase. Rather than use an amplifier with infinite gain the student decides to just use an unstable filter.
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