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For the circuit of given figure:
a. Determine the time constant of the circuit when the switch is thrown into position 1.
b. Find the mathematical expression for the voltage across the capacitor after the switch is thrown into position 1.
c. Determine the mathematical expression for the current following the closing of the switch (position 1).
d. Determine the voltage vC and the current iC if the switch is thrown into position 2 at t = 100 ms.
e. Determine the mathematical expressions for the voltage vC and the current iC if the switch is thrown into position 3 at t = 200 ms.
f. Plot the waveforms of vC and iC for a period of time extending from t = 0 to t = 300 ms.
A signal is modulated by BPSK and transmitted over an AWGN channel. At the receiver, the bit error rate performance is 0.001
A binary PAM communication system is used to transmit data over an AWGN channel. The prior probabilities for the bits bn are P[bn= 1] = 1/3 and P[bn= 0] = 2/3. Determine the optimum threshold (to be compared with the demodulator output) at the dete..
If a 2Ω load resistance is connected across the 110V winding, what are the currents in the high-voltage and low-voltage windings?
The resistance of a conductor of diameter d and length l is R Ω. - If the diameter of the conductor is halved and its length is doubled, the resistance will be:
Consider point P1, which is just above the ground directly below the thundercloud, and point P2, which is 1 km horizontally away from P1.
A quartz window of thickness L serves as a viewing port in a furnace used for annealing steel. The inner surface (x = 0) of the window is irradiated with a uniform heat flux q;: due to emission from hot gases in the furnace.
A MOD 12 and a MOD 10 counter are cascaded. The input clock frequency is 60 MHz. Determine the counter output frequency
The open-loop gain of a compensated op-amp is measured as follows:5.1´103 at100 kHz and 8.3´103 at10 kHz. Calculate its 3dB frequency, its unity-gain frequency, and its dc gain.
b. Find the Fourier Transform of signal x(t) (use the Fourier Transform definition) c. Write down the double-sided amplitude and phase spectra x(t) d. Plot the double-sided amplitude and phase spectra of x(t)
The unit impulse response of the system - Find the first three terms of the causal signal - calculate the electric field E from Gauss law and then obtain the potential at the center of the charge distribution
A heat pump maintains a dwelling at 68 F. When operating steadily, the power input to the heat pump is 5 hp, and the heat pump receives energy by heat transfer from 55 F well water at a rate of 500 Btu/min.
A steam power plant with a power output of 150 MW consumes coal at a rate of 60 tons/h. If the heating value of the coal is 30,000 kJ/kg, determine the overall efficiency of this plant.
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