Challenging Engineering Problems with Detailed Answers

Design a second-order high-pass filter for each case below and state its transfer function H(s):a) k=1, 0= 1300 rad/s and Q=0.707b) k=1, 0= 950 rad/s and Q=0.8Assume L=1HTable: Second order RLC filters
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As an engineer, you are requested to design a system to monitor the Covid-19 patients in the airport. The system must be able to detect the human temperature and if the temperature is more than 37.5C, the system will isolate the human automatically and vaporize disinfection will be turned on as well. Identify the sensor and actuator for your design. (6 marks) With the aid of block diagram, describe the process as a feedback control system.
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Suppose that a system has the following transfer function: s+1 s+ 5s +6 G(s) = 63/EK307/BEK3033 Control Systems =. Generate the plot of the output response (for time, t>0 and t
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The water utility requested a supply from the electric utility to one of their newly built pump houses. The pumps require a 400V three phase and 230V single phase supply. The load detail submitted indicates a total load demand of 180 kVA. As a distribution engineer employed with the electric utility, you are asked to consult with the customer before the supply is connected and energized. i) With the aid of a suitable, labelled circuit diagram, explain how the different voltage levels are obtained from the 12kV distribution lines. (7 marks) ii) State the typical current limit for this application, calculate the corresponding kVA limit for the utility supply mentioned in part i) and inform the customer of the repercussions if this limit is exceeded. (7 marks) iii) What option would the utility provide the customer for metering based on the demand given in the load detail? (3 marks) iv) What metering considerations must be made if this load demand increases by 100% in the future? (2 marks) (b) You built an electric device for a design project that works on the 115V supply from a general-purpose domestic outlet. To be safe, you opt to use a fuse to protect the electrical components of the device from overvoltage in the supply or accidental faults in the circuitry. With the aid of a suitable diagram, show how the fuse would be connected to the terminals of your device and describe its construction and operation.
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: P 7.2-4 Determine v(t) for the circuit shown in Figure P 7.2-4a(t) when the is(t) is as shown in Figure P 7.2-4b and vo(0) = -1 mV. is ( 2 pF (a) is (A) 4 + 0 V -2 L 1 2 3 4 (b) 5 6 t (ns)
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Find the theoretical DC analysis.Common-CollectorAmplifierPNP-basedSingle power supplyvsig = 500 mV p-pRsig = 10 KohmRL = 50 ohmGain > 0.8 V/V
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+ Vi b) Find the H(jw) for H(jw=w) = H(jw = 0.2w) = Re ww P14.11_9ed Given: R = 12.5 kn (kilo Ohm) C = 5 nF R = 50 kQ (kilo Ohm) a) Find the cutoff frequency f. for this high-pass filter. fc = Hz For = 0.200. Vo(t) = For = 500 vo(t) = Check C Copyright 2011 Pearson Education in publishing Pre at angle at angle H(jw = 5w.) = at angle c) If vi(t) = 500 cos(cot) mV (milli V), write the steady-state output voltage vo(t) for For = 0 vo(t) = cos(wt+ *) mV (milli V) www cos(wt + (degrees) cos(wt+ R F) mV (milli V) ) mV (milli V) + Vo
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Transform the following system into the diagonal canonical form. Furthermore, using your diagonal canonical form, find the transfer function and determine whether or not it is controllable. (1) (2) 1 x(t) = [3] x(t) + [3]u(t) 5 y(t) = [1 [1 2]x(t) T-10 -2 -2 3x(t) + = 3 5 -5 -5 -7] y(t) = [1 2 -1]x(t) x (t) 1 1 |u(t) -4.
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An amplifier has an open-loop gain transfer function 100,000 A(s) = (1+5)(1+5)(+54) In the space below, sketch the Bode plot for the magnitude and phase of A(s). Indicate the mid-band gain and the upper 3-dB cutoff frequency. |A| Label axes! ZA Label axes!
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Write the output expression for the given circuit in Figure 5 B C DDD Figure 5: Logic Circuit (4 marks Use AND gates, OR gates, and inverters to draw the logic circuit for the given expression. A[BC(A+B+C + D)]
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For the questions on this page, refer to the circuit below. Assume that i = 1.5A when Vs = 40V and Is= 1.5A, and i = 1A when Vs = 59V and Is = 0A. You are to find the values of R1 and R2 that account for these two operating points. R1 + Vs Enter the value of R1 (in 22). Points possible: 3 Allowed attempts: 3 Retry penalty: 33.333% Enter the value of R2 (in Q2). Points possible: 3 Allowed attempts: 3 Retry penalty: 33.333% R2 Is Submit Submit
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L Filter circuits don't just attenuate signals, they also shift the phase of signals. (Phase shift in HP filters: arctan. Phase shift in LP filters: - arctan 2rfRC) Calculate the amount of phase shift that these two filter circuits impart to their signals (from input to output) operating at the cutoff frequency: 2nfRC HP filter LP filter HH
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- Logic Circuits, Switching Theory and Programmable Logic Devices Type of Assessment : Assessment -2 Total: 20marks General Directions: Answer as Directed Q1. Design a simple circuit from the function F by reducing it using appropriate k-map, draw corresponding Logic Diagram for the simplified Expression (10 MARKS) F(w,x,y,z) Em(1,3,4,8,11,15)+d(0,5,6,7,9) Q2. Implement the simplified logical expression of Question 1 using universal gates (Nand) How many Nand gates are required as well specify how many AOI ICs and Nand ICs are needed for the same
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A particular n-channel MOSFET has the following specifications: kn = 5x10- A/V and V=1V. The width, W, is 12 m and the length, L, is 2.5 m. a) If VGS = 0.1V and VDs = 0.1V, what is the mode of operation? Find Ip. Calculate Rps. b) If VGS = 3.3V and VDs = 0.1V, what is the mode of operation? Find Ip. Calculate RDs. c) If VGS = 3.3V and VDs = 3.0V, what is the mode of operation? Find ID. Calculate Ros. 3. Reconsider the transistor from #2 with VGS = 3.5V and VDs = 3.0V. Recalculate lp and Ros for each of the following permutations (individually) and then comment on what influence the parametric variation has on the current and channel resistance: a) Double the gate oxide thickness, tox. b) Double W. c) Double L. d) Double VT.
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(2-2)({-2) = ()H N Question Consider a discrete-time system given by: 2 H(z) = (2-3) (-4) Find the difference equation that relates the input x[n] to the output y[n]
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An amplifier gives you a 100 boost in power (Pout/Pin = 100). What is the gain in dB? 20 60 3 6 5 pts
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S S2 $1 SO 0 1 00 1 C 1 SSo 01 0 1 INPUT INPUT VCC INPUY 11 X X SOP for A: SS + S So 1 1 1 10 1 1 0 NOT Do ins13 S2 S1 SO A 0 0 0 1 0 1 0 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 0 1 1 X 0 inst1 inst4 1 X S P 0 0 1 X 0 1 0 X 0 1 00 0 0 S1So NAND2 01 0 inst NAND2 inst2 11 X (1) X 10 1 0 SOP for P: SSS0 + S5150 NAND2 Do inst5 OUTPUT A Please show me how to build this circuit for output A on a breadboard. Along is the truth table and K- map.
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Using the Figure 2 below, design a backup battery/ inverter system that will reliably provide 1 kW of power for a minimum period of 2 hours. Suppliers in PE have Lead-Acid batteries in the 12 V/100 Ah size. Assuming the batteries will go through 600 charge/ discharge cycles per year. Design the system so that it will give you approximately 10 years of good use when used at 20 degrees ambient temperature. Assume the system has a combined efficiency of 96%. Also, assume that the available inverter requires an input voltage of 24V DC to operate. Number of cycles 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 20 MARINE ELECTRICAL SYSTEMS III-EMES301 30 40 50 60 70 80 90 100 Depth of discharge (%) Typical cycle life versus DOD(20C) Figure 2
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A liquid dominated geothermal power system, uses saturated liquid water from a reservoir at 290 psi and outputs 250MW at the turbine. The steam enters the turbine at 44 psi and condenses at 3 psi. The turbine efficiency is 80%. The cooling tower exit temperature is 20C.a) Calculate the mass flow rate of steam passing through the turbineb) Calculate the mass flow rate of water out of the reservoir
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A particular n-channel MOSFET has the following specifications: kn' = 5x10- A/V and V=1V. The width, W, is 12 um and the length, L, is 2.5 m. a) If VGs = 0.1V and VDs = 0.1V, what is the mode of operation? Find Ip. Calculate Rs. b) If VGS = 3.3V and VDs = 0.1V, what is the mode of operation? Find Ip. Calculate RDs. c) If VGS = 3.3V and VDs = 3.0V, what is the mode of operation? Find Ip. Calculate Rps. - -
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Design a 4 bit binary weighted resistor D/A converter for the following specifications Use LM741 op-amp. R = 10 k, Vref=2.5 V. Full scale output 5V. 3. i. Which is the fastest A/D converter? Give reason.
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Perform the convolution of x[n] = [x[0]=3 5 7 9] with h[n]= [h[0]=1 2 3] using DFT. You can use MATLAB. 2) Perform the N=5 point circular convolution of x and h using DFT. 3) Perform the N=5 point circular convolution of x and h in time-domain. 4) Perform the convolution of x[n]= [3, x[0]=5 79] with h[n] = [h[0]=1 2 3] using DFT. What is the difference between Question 1 and this case?
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A stainless steel manufacturing factory has a maximum load of 1,500kVA at 0.7 power factor lagging. The factory is billed with two-part tariff with below conditions: Maximum demand charge = $75/kVA/annum Energy charge = $0.15/kWh Ans Capacitor bank charge = $150/kVAr Capacitor bank's interest and depreciation per annum = 10% The factory works 5040 hours a year. Determine: a) the most economical power factor of the factory; b) the annual maximum demand charge, annual energy charge and annual electricity charge when the factory is operating at the most economical power factor; c) the annual cost saving;
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In an opamp inverting amplifier circuit, R = 10 ko. and Ri= 2.2 k. Find the output voltage when the input voltage is (a) +0.25 V (b)-1.8V
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