Ultimate Engineering Study Guide - Questions & Answers

In contrast to British Standards which are descriptive codes, Eurocodes are called performance codes. Analyze and compare the two specifications in terms of material properties, elasticity and safety factor.
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Explain loading effect in an instrument?Briefly explain with examples.
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By using the reverse-engineering principle, the following calculation and explain in the detail on the possible assessment and decision making made. Your answer must be based from the perspective of Engineering Economics and justification is needed for each points made. Provide five (5) points with justifications. PW A==[C (A/P,10%,0)](P/A,10%,0)[C (A/P,10%,3,6,9,12)](P/A,10%,3,6,9,12)[X (A/P,10%,0)](P/A,10%,0)[X (A/P,10%,3,6,9,12)](P/A,10%,3,6,9,12)+4D+EG(P/A,10%,15)H(P/F,10%,2.5,5.5,8.5,11.5,14.5)4 J[C (A/P,10%,0)](P/A,10%,0)[C ( A/P,10%,5,10)](P/A,10%,5,10)[X (A/P,10%,0)](P/A,10%,0)[X ( A/P,10%,5,10)](P/A,10%,5,10)+2M+EQ(P/A,10%,15)H(P/F,10%,2.5,5.5,8.5,11.5,14.5)3 JW(P/F,10%,3.5,8.5,13.5)
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A supermarket chain is considering introducing high efficiency aisle lighting for its stores. A trial run at one of its stores saw $35,000 spent on installing the new system and savings of $23,000 on annual operating and maintenance costs at the end of the first year of operation. If savings in subsequent years were expected to be similar (in todays dollars), what is the net present value of the supermarkets investment after 10 years? Assume an inflation rate of 5% and a discount rate of 10%. Explain, qualitatively, how your results would change if the inflation rate varied but the discount rate remained constant.
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Assume that, in a workshop, there are K number of high-precision 3-D printers. The following data was collected for each printer: Luj: The number of jobs waiting to be processed by printer j (1 js K) at the end of month i (1 sis 12). A: The number of jobs that the printer j (1sjs K) completed during month i (1 sis 12) Derive the equations that provide the estimates of the average total waiting time (in the printer job queue plus printing time) of a job (a) per 3-D printer (5 marks), and (b) the overall workshop (5 marks).
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Suppose that there are two parties in a contract party A and party B. The two parties involved in a fomal written contract. It was found out that party B has submitted some documentations which were found to be fraudulent. But party A went to the court to file a contract avoidance against Party B. Upon further analysis by the court, the submitted documentations of Party B was found to be fraudulent in nature. Develop the rights and responsibilities of the parties involved in this case and come up with a conclusion in the case with any one Bahrain law (5 marks)
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A signal of 15 MHz is sampled at a rate of 28 MHz. What alias is generated? 2. A signal of 140 MHz has a bandwidth of 20 MHz. What is the Nyquist sampling rate? 3. What is the aliased spectrum if the 140 MHz signal is sampled at a rate 60 MHz? 4. What is the desired sampling rate for centering the spectrum in the first Nyquist zone?
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Sketch the Magnitude and Phase Bode Plots of the following transfer function on semi-log papers. G(s) = 4 (s + 5) s (s + 100) Problem 4-23. Sketch the Magnitude and Phase Bode Plots of the following transfer function on comidon naners
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Course INFORMATION SYSTEM AUDIT AND CONTROL2. Discuss the role of Audit Committee
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Given a transfer function H(w)= jw/(jw+1000), find the gain (V/V) at a frequency of 0.19 kHz. Enter your answer to 3 signficant figures. 2 points Save AnswerPrevious question
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In AC-DC controlled rectifiersa. The average load voltage decreases as the firing angle decreases.b. The average load voltage decreases as the firing angle increases.c. The average load voltage increases as the firing angle decreases.d. The average load voltage increases as the firing angle increases.2) Which of the following is not an advantage of conductor bundling in transmission lines?a. Less skin effect losses in transmission linesb. Eliminate the effect of capacitance in transmission linesc. Reduce series inductance of the transmission linesd. Increase ratings at less conductor weight of transmission lines3) A small power system consists of 3 buses connected to each other. Find the voltage at bus 2 after one iteration using Gauss iterative method. Knowing that bus 2 is a load bus, while bus 3 is a voltage controlled bus at which the voltage magnitude is fixed at 1.04 p.u., and given the following values: S5 sch= -3.5-2.5j Y21 = 40j, Y22=-60j, Y23 = 20ja. 0.854234 +3.4356b. 1.044+15.6489C. 1.04 +3.4356d. 0.9734 2-3.43564) The most suitable method to solve power flow problems in large power systems is:a. Gauss iterative methodb. Gauss Seidel with acceleration factor methodC. Newton Raphson methodd. Gauss Seidel method5) are used to connect the transformer terminals with the transmission linesa. Cablesb. Windingsc. Bushingsd. Surge arresters6) The knowledge of the behavior of electrical insulation when subjected to high voltage refers to:a. High Voltage Measurementsb. High Voltage Engineeringc. High Voltage Generationd. High Voltage insulation7) Lamp efficiency is defined as the ratio of thea. luminous flux to the input power.b. Output power to the input power.c. Total voltage to the input power.d. Total current to the input power.8) The cross-section of the cable is selected to carry......a. the rated load+ 50%b. the rated load + 25%c. the rated load + 5%d. the rated load+ 2.5%9) The signal with finite energy can be:a. finite power.b. Zero power.c. infinite energy.d. Power unity.10) A system is called causal systema. If the output depends on the future input value.b. If it has a memory.c. When it has a zero-input response.d. When the output depends on the present and past input value. Clear my choice
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Explain when you will use Aluminium conduit and when galvanised steel conduit to carry signal cables past:i. a huge mains transformer and ii. a 100 kW inverter rack. Explain your choices.b) Explain how disturbance signals are quenched at AC and DC contactor coils and draw the appropriate circuits.
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[25 A 200-KVA, 480-V, 50-Hz, A-connected synchronous generator with a rated field current of 5A was tested, and the following data were taken: 1. Vr.oc at the rated IF was measured to be 540V 2. Isc at the rated IF was found to be 300A 3. When a DC voltage of 10V was applied to the two of the terminals, a current of 25A was measured Find the values of the armature resistance and the approximate synchronous reactance in ohms that would be used in the generator model at the rated conditions.
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A linear liquid-level control system has input control signal of 2 to 15 V is converts into displacement of 1 to 4 m. (CLO1) i. Determine the relation between displacement level and voltage. [5 Marks] ii. Find the displacement of the system if the input control signal 50% from its full-scale [3 Marks] b) A PT100 RTD temperature sensor has a span of 10C to 200C. A measurement results in a value of 90C for the temperature. Specify the error if the accuracy is: (CLO1) . +0.5% full-scale (FS) [4 Marks] ii. 0.3% of span [4 Marks] iii. +2.0% of reading [4 Marks]
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Sketch the p-channel current-source (current mirror) circuit. Let VDD = 1.3 V, V = 0.4 V, Q and Q be matched, and upCox = 80 A/V. Find the device's W/L ratios and the value of the resistor that sets the value of IREF SO that a 80-A output current is obtained. The current source is required to operate for Vo as high as 1.1 V. Neglect channel-length modulation.
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Suppose you have generated a USB SSB signal with a nominal carrier frequency of 10 MHz. What is the minimum frequency the SSB signal can be mixed with so that the output signal has a nominal carrier frequency of 50 MHz? a 6. Suppose you have an FM modulator that puts out 1 MHz carrier with a 100-hertz deviation. If frequency multiplication is used to increase the deviation to 400 hertz, what will be the new carrier frequency? 7. What is the efficiency of a 100-watt mobile transmitter if it draws 11 amps from a 12-volt car battery?
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A temperature sensor with amplification is connected to an ADC (9-bit). If the sensor reads 268 OC, the sensor output is 8.47V. The temperature range that the sensor can measure is 0 - 268 oc, and the output voltage range is OV - 8.47V. The internal reference voltage of the ADC is 22.87V. 3.1. Sketch a circuit diagram of the system. Clearly show the amplifier circuit with all required resistors. (4) For best resolution on the ADC, determine the required voltage gain of the amplifier. (2) Design the circuit of the amplifier to ensure best resolution. (2) 3.4. For a sensor reading of 225.12 oC, calculate the sensor output voltage and the ADC output code. (4) 3.5. The sensor reading should be displayed using a micro-controller. What scaling factor should the ADC output code be multiplied with in order to convert it back to a temperature reading. (3) 3.2. 3.3.
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Write Truth Table and Boolean equations for SUM and CARRY of Full Adder and then draw the circuit diagram of it. (3) Q-4. (a) Draw the circuits of T flip flop using D flip flop and write its truth table. (2) (b) Draw the logic circuit for Boolean equation below by using Universal gates (NOR) only. F = A + B (2)
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Use the frequency transformation to find the parameters a, b, c, d, e Z so that the transfer function: asbetc corresponds to a high-pass filter with cutoff frequency (lower limit for the passband) wi = 2/2 rad/s. H(s) = 1 +dste a: b: c: d: e:
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Determine if each of the following signals is a power signal, energy signal or neither. Determine the appropriate power/energy. a. x(t) = 3[u(t+2) -u(t-2)] b. x(t) = 2[r(t)-u(t-2)] c. x(t) = e-tu(t) d. x(t) = [1-etJu(t) e. x(t) = [e-2t sin(t)]
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What is the future work of Voltage Sag and Mitigation Using Dynamic Voltage Restorer (DVR) SystemProject
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A strain gauge has a resistance of 350 and a gauge factor of 2Design a schematic of the measurement circuitry that will measure the strain from 0 ~ 0.005. operational amplifiers can be used.The power supply is +-5V and the output voltage should be less than 5VWhat is the output voltage of the circuit when the maximum strain of 0.005 is measured? Please show calculationsPLEASE SHOW THE SCHEMATIC
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(50 points) Filter response and convolution Consider the second-order differencing filter described by the input-output relationship y[n] = x[n + 1] 2x[n] + x[n 1 (a) What is the impulse response of this filter? Is the filter causal? (b) Show that if the input signal is quadratic in n, i.e., x[n] = an + bn + c then the output signal takes the same value for all n. (c) Show that the complex frequency response H(e) is actually real-valued. What is the output of the filter when the input is x[n] = cos(wn) (for all n n)? For what value(s) of w is the output zero for all n? (d) Determine and sketch the response y[-] of the filter to the input signal 3- n>0 " x[n] = { 0 n=0 7 -3" n
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Consider a system with closed-loop transfer function. By using a Routh-Hurwitz stability criterion, determine K in order to make the system to operate in a stable condition. K H(s) = s(s + 3s + 4)(s + 3) + K
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