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At peak load, transmission systems need to increase their VAr generation, and as the load reduces to a minimum (usually during the night) they need to reduce the generated VArs by the which methods, given in order of economic viability?
A one-dimensional infinite potential well with a width of 12 Ao contains an electron. (a) Calculate the first two energy levels that the electron may occupy. (b) If an electron drops from the second energy level to the first, what is the wavelengt..
Write a computer program to solve the dispersion relation V(1-b)^0.5 =mπ+arctan(b/(1-b))+arctan((b+a)/(1-b)). (a) We wish to fabricate a planar waveguide in GaAs (n = 3.6) for light of wavelength λ = 1.3 μm that will operate only in the fundamen..
A 1.8-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh, what is the cost of its operation for 30 days
an analog ammeter and the faceplate states an accuracy of +/- 1.5% of full scale value. if we take a measurement on the 10A scale and we measure 1.8A, what are the limits that the actual value will fall under.
1) A 1.5H inductor has a constant current of 2.5A. a) find the energy that it holds b) what is its voltage c) what is its energy after its current drops to zero and stays zero What power is dissipated when a 20 olhm resistor is connected to it
show that the resistivity of intrinsic Ge at 300k is 44.44 ohm-cm. If donor impurity is added to an extent of 1 atom per 10^8 Ge atoms, prove that the resistivity of the Ge sample drops to 4.42 ohm-cm (at 300k).
How many time units would youneed to compute all the carry bits and why. Compute all the sum bits usingthe aforementioned carry bits. How many time units would you needto complete the addition process and why.
a) Compute and plot the magnitude of the DFT for f(t) using "fftshift", assuming a sampling rate of 8000 Hz and a duration of 0.5 second. b) Window the samples of f(t) using a hann window
Gauss's Law and Applications: Two infinitely long coaxial cylindrical surfaces, r = a and r= b (b > a), carry surface charge densities ?sa and ?sb,respectively. (a) Determine the electric field intensity everywhere. (b) What must be the relation betw..
An op amp differential amplifier is built using four identical resistors, each havign a tolerance of ±5%. Calculate the worse possible CMRR.
a) Write the real-time expressions in the z=0 plane. What kind of polarization exists here Is is clockwise or counterclockwise (looking along +z) b) Find the expression for the accompanying H(z) field.
A separately excited 300V DC motor has an armature resistance of 1ohm and a field resistance of 100 ohm. The field Voltage is 200V. The no load speed is 1200 rpm and no load armature current 2A
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