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Determine the current through each of the impedance elements given below. Assume an applied voltage of 480 ? 30o V. Express your answers in polar form.
a. Z = 50 + j0Ω
b. Z = 20 + j15Ωc. Z = 30 - j25Ω
A certain element has a phasor voltage of V=86.6+j50 V and the current I= -2.5+j4.33 A. The angular frquency is 200rad/s. determine the value of C to two significant figures with appropriate units.
Design a Common Emitter amplifier with no bypass capacitor to obtain a voltage gain of -10 when Rin= 2k, Rload= 4k, VCC= 15V, VBE= 0.6V, and beta= 300. This amplifier requires an output swing of 4V peak-to-peak.
For a photovoltaic installation at latitude 30°N, you have the option to position the panels facing south at slope angles of 0°, 10°, 30°, or 90° to the horizontal plane. Determine the panel orientation you would choose to obtain maximum energy
Given a function G = K/(s + 5)^2 and needing to design a lag network that needs a phase margin of 45 degrees and a steady state error of 5% how do you calculate aplha and tau for the compensator function Gc(s) = (1 + tau*s)/(1 + aplha*tau*s)
find the one-way propagation delay for a 10 meter length. Find the two-way propagation delay. (The two-way delay is the time it takes for the wave to travel from the source to the load and back to the source, like in a radar)
A. Two machinery options are described below. Calcuate the present value of each of the items specified. Assume an interest rate of 6% and a useful life of 8 years. Show all the necesary work to calcualte value.
Digitizing an Audio Signal, PAM, ADC, An audio signal has a bandwidth that extends from 100 Hz to 10 kHz. The signal is sampled to create a PAM signal and then digitized by an analog to digital converter (ADC) that has 8 bits.
Discuss why phasor analysis can only be performed on single-frequency circuits. For multiple frequencies what type of analysis must be performed
Suppose we transmitted 5 cos wct for logic one and 15 cos wct for logic zero. Find the maximum signal energy. Design a demodulator and show the detection criterion for the output of the demodulator. Finally, find the bit error-rate.
Consider the signal x (t) = 10+ 20 cos (100*2 t + 4) + 10 cos (250*2 t ) A. Using Euler's relation, the signal x(t) defined by the above equation can be expressed as a sum of complex exponentials in the form X(t) = x0 + Re{k=1N Xkejk2fot}
A 10kVA, 200/400V 50Hz single-phase transformer gave the following test results. O/C test: 200V, 1.3A, 120W, on l.v. side. S/C test: 22V, 30A, 200W on h.v. side. (a) Calculate the magnetizing current and the component corresponding to core loss
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.
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