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The instantaneous values of voltage applied to a single-phase series R-L load, and the resulting currentin the load, are given by the equations:v = 8.0 sin 314.16t V; i = 3.5 sin (314.16t + 60o) A(a) Determine the values of the voltage and current phasors in polar form.(b) Calculate the instantaneous voltage at a time 0.8 ms after it crosses the zero-value axis in a positive going direction.(c) Calculate the instantaneous current at a time 1.6 ms after it crosses the zero-value axis in a positive going direction.(d) Sketch the instantaneous voltage and current waveforms on the same time axis, for one voltage cycle.
(1) What is the difference between a series and a parallel circuit (2) How do you evaluate the total resistance of a parallel circuit
A 250ft^2 shell and tube heat exchanger was purchased fo $13,500 in 1994 when the index value was 830. Estimate the cost of a 150 ft^2 shell and tube heat exchanger in 2010 when the index calue is 1,029 and the appropriate factor is 0.6.
(a) Determine the differential equation that relates the input current x(t) to output current y(t). Recall that V l= L(di/dt) (b) Find the characteristic equation for this circuit and express the root(s) of the characteristic equation of L, L, and R.
In a MOS cascode amplifier, the cascode transistor is required to raise the output resistance by a factor of 40. If the transistor is operated at Vov = 0.2 V, what must its Va be
A certain type of power resistor comes in the following rating:3w,5w,8w,12w,20w. your particular application requires a resistor that can handle approximately 8w.
A waveform generator is connected to an op-amp which has been setup as a voltage follower. The voltage follower is then loaded with a 50 Ohm resistor. What output impedance setting should the waveform generator use
What happens to an ECG signal when a triggered average is applied I can see from the graphs that the peaks directly before and after the triggered peak become more and more blurry, but I don't understand
A parallel circuit consists of a source and 15 ohm and 30 ohm resistors. The resistor of 15ohm draws a current of 8A. a) Find the current out of the current source. b) Find the current through the 30 ohm resistor.
Fuel cell systems that also utilize the heat produced can achieve efficiencies approaching 80 percent , more than double of the gas-turbine based electruiical generation . Assume that 25 million houuseholds produce an average of 5 kw.
calculate the convolution (x1[x]*x2[k]) for the following pairs of sequences: a-) x1[k]=u[k+3]-u[k-2] and x2[k]=u[k+5]-u[k-4] b-) x1[k]=0.5^k u[k] and x2[k]=cos Pi*k u[-k]
Sketch the complete Nyquist diagram for the following open-loop transfer function. Determine the effect of K on the closed-loop stability. Explain how the "shortcuts" contribute to the diagram.
Write the theoretical Power Spectral Density for a BPSK signal with shift angle of 180 degrees, carrier of 25 kHz and bit rate of about 1 kHz that has been spread by a PN sequence with a bit rate of about 100 kHz. State it or derive it.
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