Show transcribed image text 1. Complete the following review problems on Ohms law, voltage dividers, current dividers and Thevenin/Norton equivalent circuits. (A) Measurements taken on various resistors are shown below. For each case, calculate the power dissipated in the resisto...
31 Jul 2020Show transcribed image text A 345 kV, 60 Hz transposed transmission line has the following characteristics: ? 2 -954 KCM ACSR conductors per phase and 18 inch bundle spacing ? Phases have flat spacing with 25 feet separation ? The average height of the phase conductors above grou...
31 Jul 2020Given is the following circuit. Find analytically the impulse response h(t) of the system where and Vin(t)=1 for 0 We obtain by convolving the impulse response and the given input signal.1.1 What is the analytical expression for the impuse response h(t) for t>0? Use "^" to s...
31 Jul 2020a. Find the transfer function for the filter circuit above (Vo/Vi) as a function of jw. (Leave R and C as variables)b. Transpose the transfer function to a magnitude and phase, that is |H(jw)|e^jthetac. Approximate the magnitude and phase, that is |H(jw)|e^jthetad. If R=1000 ohms...
31 Jul 2020In the circuit shown in the figure below, diodes D 1 through D 4 are identical, and each exhibits a voltage drop of 0.7 V at a 1-mA current. (a) For small input signals (e.g., 10-mV peak), find the small-signal equivalent circuit and use it to determine values of the small-sig...
31 Jul 2020In the circuit shown in the figure below, diodes D 1 through D 4 are identical, and each exhibits a voltage drop of 0.7 V at a 1-mA current. (a) For small input signals (e.g., 10-mV peak), find the small-signal equivalent circuit and use it to determine values of the small-sig...
31 Jul 2020For the comparator below, complete the design so that the threshold voltage is 1.25V which means that if the input is below 1.25V, the output will be HIGH and if its greater, it will be low. Once the resistance values are found, use Multisim to validate the design by applying a s...
31 Jul 2020Design a 10-to-4 encoder with the inputs 1-out-of-10 code and outputs coded normally for 0 A????1 7 (binary 0000 - 0111) and 8 is coded as E (1110) and 9 is coded as F (1111). Show the internal circuit.
31 Jul 2020using only the frequency discrimination method, design a single-sideband modulation transmitter receiver communication system subject to the following requirements:1. The carrier frequency:............................................ fc = 2- 10 MHz2. The transmitter output power:...
31 Jul 2020A sinusoidal signal, with amplitude of 3.25 volts, is applied to a uniform quantizer of the mid-tread type whose output takes on the values 0, ±1, ±2, ±3 volts. Sketch the waveform of the resulting quantizer output for one complete cycle of the input. (b) Repeat this evaluation f...
31 Jul 2020Consider the propagation model in Section 2.1.5 where there is a reflected path from the ground plane.1. Let r1 be the length of the direct path in Figure 2.6. Let r2 be the length of the reflected path (summing the path length from the transmitter to the ground plane and the ...
31 Jul 2020Consider the two-path example in Section 2.1.4 with d = 2 km and the receiver at 1.5 km from the transmitter moving at velocity 60 km/h away from the transmitter. The carrier frequency is 900 MHz.1. Plot in MATLAB the magnitudes of the taps of the discrete-time baseband channe...
31 Jul 2020Consider a one-ring model where there are K scatterers located at angles i = 21ri/Ki = 0K − 1, on a circle of radius 1 km around the receiverand the transmitter is 2 km away. (The angles are with respect to the line joining the transmitter and the receiver.) The transmit power is...
31 Jul 2020Exercise 3.1 Verify (3.19) and the high SNR approximation (3.21). Hint: Write the expression as a double integral and interchange the order of integration.Exercise 3.2 In Section 3.1.2 we studied the performance of antipodal signaling under coherent detection over a Rayleigh fad...
31 Jul 2020The optimal coherent receiver for repetition coding with L branches of diversity is a maximal ratio combiner. For implementation reasons, a simpler receiver one often builds is a selection combiner. It does detection based on the received signal along the branch with the stronges...
31 Jul 2020What is the maximum reliable rate of communication over the (complex) AWGN channel when only the I channel is used? How does that compare to the capac- ity of the complex channel at low and high SNR, with the same average power con- straint? Relate your conclusion to the analogou...
31 Jul 2020Exercise 5.14 Consider a MISO slow fading channel.1. Verify that the Alamouti scheme radiates energy in an isotropic manner.2. Show that a transmit diversity scheme radiates energy in an isotropic manner if and only if the signals transmitted from the antennas have the sam...
31 Jul 2020Consider the basic uplink AWGN channel in (6.1) with power constraints Pk on user k (for k = 12). In Section 6.1.3, we stated that orthogonal multiple access is optimal when the degrees of freedom are split in direct proportion to the powers ofthe users. Verify this. Show also t...
31 Jul 2020Consider the time-invariant frequency-selective MIMO channel:L−1y[m] Hf x[m f] w[m]. (8.112)f=0Construct an appropriate OFDM transmission and reception scheme to transform the original channel to the following parallel MIMO channel:yn Hn xn wnn = 0Nc −...
31 Jul 2020Exercise 8.20 We have seen in Figure 8.13 that, at low SNR, the bank of linear matched filter achieves capacity of the 8 by 8 i.i.d. Rayleigh fading channel, in the sense that the ratio of the total achievable rate to the capacity approaches 1. Show that this is true for general ...
31 Jul 2020A sinusoidal signal, with amplitude of 3.25 volts, is applied to a uniform quantizer of the midtread type whose output takes on the values 0, ±1, ±2, ±3 volts. Sketch the waveform of the resulting quantizer output for one complete cycle of the >
31 Jul 2020Signals and Systems Review: Consider the unit-step function u(t) defined as, u(t) , ? ? ? 1 t > 0 1 2 t = 0 0 t
31 Jul 2020Signals and Systems Review: Consider the signal x(t) given below. x(t) = sin (t), 0 = t = p 0, otherwise Express the above signal as the difference signal y (t)y (t - p). Hence, using the time-shift property, evaluate the CFT of the above signal.
31 Jul 2020Parseval’s Relation: Derive the FT of the signal x (t) , e -at, a > 0, 0 = t
31 Jul 2020What is skin effect, and how does it affect the Q of a coil?
31 Jul 2020A piece of communication equipment has two stages of amplification with gains of 40 and 60 and two loss stages with attenuation factors of 0.03 and 0.075. The output voltage is 2.2 V. What are the overall gain (or attenuation) and the input voltage?
31 Jul 2020The antenna current produced by an unmodulated carrier is 2.4 A into an antenna with a resistance of 75 Ω. When amplitude-modulated, the antenna current rises to 2.7 A. What is the percentage of modulation?
31 Jul 2020The signal-to-noise ratio in an FM system is 4:1. The maximum allowed deviation is 4 kHz. How much frequency deviation is introduced by the phase shift caused by the noise when the modulating frequency is 650 Hz? What is the real signal-to-noise ratio?
31 Jul 2020A varactor phase modulator like the one in Fig. 6-11 has a resistance value of 3.3 kΩ. The capacitance of the varactor at the center unmodulated frequency is 40 pF and the carrier frequency is 1 MHz. (a) What is the phase shift? (b) If the modulating signal changes the varactor c...
31 Jul 2020Name the three primary sources of external noise.Q26;What is a direct-conversion receiver? What are its main advantages?
31 Jul 2020The signal input power to a receiver is 6.2 nW. The noise power is 1.8 nW. What is the S/N ratio? What is the S/N ratio in decibels?
31 Jul 2020What is the time delay introduced by a coaxial cable with the specifications given in Prob. 7 if the length is 65 ft?Prob. 7Determine the length in feet of a one-quarter wavelength coaxial cable with a velocity factor of 0.8 at a frequency of 49 MHz.
31 Jul 2020The reflection coefficient of a transmission line is 0.75. What is the SWR?
31 Jul 2020Given :MW (H2SO4) =98.08MW(HCLO4) =100.46MW (Ba(CLO4)2) =336.25MW (BaSO4) =233.41The reaction follows stoichiometry.Ba (CIO4)2 H2SO4 ? BaSO4 2 HCIO4The fed H2SO4 is 25% in excess of stoichiometric amount required for reaction with Ba(CLO42.Amount of 100kg/h of stream containing...
31 Jul 2020Determine the Residendence time distribution,E(t) of two reactors
31 Jul 2020A 30-liter cylinder is evacuated and filled with 5.00kg of a gas containing 10.0 mole% N_2O and the balance N_2. The gas temperature is 24degree C. Use the compressibility chart to solve the following problems What is the gauge pressure (atm) of the cylinder gas after the tank is...
31 Jul 2020A 30-liter cylinder is evacuated and filled with 5.00kg of a gas containing 10.0 mole% N_2O and the balance N_2. The gas temperature is 24degree C. Use the compressibility chart to solve the following problems What is the gauge pressure (atm) of the cylinder gas after the tank is...
31 Jul 2020Aniline is being removed from water by solvent extraction using toluene. Aqueous and organic phases will form after adding the organic solvent into the water phase. The extraction is carried out in a 10-stage countercurrent tower, shown in the following figure. The equilibrium re...
31 Jul 2020Aniline is being removed from water by solvent extraction using toluene. Aqueous and organic phases will form after adding the organic solvent into the water phase. The extraction is carried out in a 10-stage countercurrent tower, shown in the following figure. The equilibrium re...
31 Jul 2020Aniline is being removed from water by solvent extraction using toluene. Aqueous and organic phases will form after adding the organic solvent into the water phase. The extraction is carried out in a 10-stage countercurrent tower, shown in the following figure. The equilibrium re...
31 Jul 2020Aniline is being removed from water by solvent extraction using toluene. Aqueous and organic phases will form after adding the organic solvent into the water phase. The extraction is carried out in a 10-stage countercurrent tower, shown in the following figure. The equilibrium re...
31 Jul 2020Aniline is being removed from water by solvent extraction using toluene. Aqueous and organic phases will form after adding the organic solvent into the water phase. The extraction is carried out in a 10-stage countercurrent tower, shown in the following figure. The equilibrium re...
31 Jul 2020Charlie operates a flower shop. He agrees to sell his business to his sister Ali for $45,000. They both use their own solicitors to negotiate the terms of a formal written agreement. The agreement contains a restriction that Charlie cannot, in the following two years, open anothe...
31 Jul 2020We are planning to operate a batch reactor to convert A into R. This is a liquid reaction, the stoichiometry is A-? R, and the rate of reaction is given in the Table below How long must we react each batch for the concentra- tion to drop from CAo= 1.3 mollliter to CAf = 0.3 moll...
31 Jul 2020What is the length of a one-quarter wavelength microstrip at 2.2 GHz? (The dielectric constant of the PCB is 4.5.)
31 Jul 2020We are planning to operate a batch reactor to convert A into R. This is a liquid reaction, the stoichiometry is A-? R, and the rate of reaction is given in the Table below How long must we react each batch for the concentra- tion to drop from CAo= 1.3 mollliter to CAf = 0.3 moll...
31 Jul 2020A pipeline connecting two tanks contains four standard elbows, a plug valve that is fully open and a gate valve that is half open. The line is commercial steel pipe, 25 mm internal diameter, length 120 m. The properties of the fluid are: viscosity 0.99 mNM_2 s, density 998 kg/m3....
31 Jul 2020A signal of finite energy is applied to a square-law device whose output is defined byThe spectrum of is limited to the frequency interval –W ≤ f ≤ W. Hence, show that the spectrum of is limited to –W ≤ f ≤ 2W.
31 Jul 2020A pipeline connecting two tanks contains four standard elbows, a plug valve that is fully open and a gate valve that is half open. The line is commercial steel pipe, 25 mm internal diameter, length 120 m. The properties of the fluid are: viscosity 0.99 mNM_2 s, density 998 kg/m3....
31 Jul 2020A pipeline connecting two tanks contains four standard elbows, a plug valve that is fully open and a gate valve that is half open. The line is commercial steel pipe, 25 mm internal diameter, length 120 m. The properties of the fluid are: viscosity 0.99 mNM_2 s, density 998 kg/m3....
31 Jul 2020