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An aperture-coupled rectangular waveguide cavity has a resonant frequency of 9.0 GHz and an unloaded Q of 11,000. If the waveguide dimensions are a = 2.5 cm and b = 1.25 cm, find the normalized aperture reactance required for critical coupling.
Calculate the concentration of electrons and holes in a sample of silicon that has a concentration of acceptor atoms equal to 10^16/cm^3. Is this semiconductor n or p type
A sample of silicon contains 1x1018/cm3 donors. Below what temperature does it cease to show intrinsic properties if the band gap is 1.12ev and the intrinsic carrier concentration is 2x1016/cm3 at 300K.
1- Use the half-reaction method to balance the equation Ca(s) +Cl2(g) --> CaCl2(s). 2-A sample of sodium chloride, NaCl, weighing 0.0678 g is placed in a 25.0-mL volumetric flask. Enough water is added to dissolve the NaCl, and then the flask is ..
An amplifier has an input resistance of 1 k Ω, an output resistance of 200Ω, and a short-circuit trans-conductance gain of 0.5 S. Determine the open-circuit voltage gain, the short-circuit current gain, and the open-circuit trans-resistance gain.
A system has the transfer function: g(s)=7(9) / s(s^2 +(7+9) s + 7(9) a). write this transfer function in polynomial form and pole-zero form.
As usual neglecting edge effects, find the capacitance as a formula containing S,d, e1, ande2. Test that yourformula gives the correct well-known result for the capacitance ofa parallel-plate capacitor with uniform dielectric when you put e1 = e2.
Generate the Bode frequency response plots for your filter. Verify that your filter has the correct cutoff frequency - Find the pole locations and plot the pole locations in the s-plane.
The source has an abc-phase sequence. At the wye-connected load, the phase-a voltage Va'n' has phase angle (theta)a'n' = 60 degrees and the phase impedance is (10 + j15) ohms. Further, the line impedance per phase is (1.1+ j1.5) ohms
Determine the HV-side fuses needed to protect a 3x140kVA, 12470/208 YNyn0 distribution transformer bank. Show and explain step by step the procedure you employ to solve this question. Use the type K and type T fuse curves
Compare the readings of two ammeters of unequal resistance when placed in parallel with each other and the combination inserted in series in a circuit.
redesign the 1s-counting machine, assigning the states in the binary counting order (S0-S3=00,01,10,11). Compare the cost of the resulting sum-of-product excitation equations with the ones derived in the text.
A modulating signal consists of two sinusoidal components: 1 kHz and 3 kHz. The transmitter carrier frequency is 80 kHz. If the signal is applied to an ideal DSB transmitter, indicate the output frequencies (in kHz).
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