Electrical Engineering question and answers for July 16, 2023
- Q Explain in your own words why light is trapped in an opticalfiber. Describe at least two cases where you have observed theeffects of light refraction besides the case of a...
- Q Alternating current machines
- Q Provide answers for the following: a) What is the protectionoffered by IP5X against solid object? (1 mark) b) What is theprotection offered by IP5X against liquids? (1 mark).
- Q Try to reconstruct the original from PWM and PPM signal directlywith low pass filters. Could the signal be recovered? Why?
- Q Advanced Digital System DesignBuild a 1-bit subtractor and scale it up to become an 8-bitsubrtactor. Include truth tables and gate level diagrams for the1-bit version.
- Q Identify FM Broadcasting System in wireless communication anddesign circuit.Draw the appropriate circuit diagram or functioningdiagram.Develop circuit diagram in MATLAB for FM Broadcasting Systemand run the simulation.
- Q Would it be possible to set a PID controller up on a PLC, andadjust it’s setpoint / AUTO / MANUAL selection from a SCADAsystem?
- Q When trying to implement PID control, it is said that wetypically find three types of processes, namely:a) Resistance Type Processesb) Capacitance Type Processes,c) Inertia Type Processes. In most instances, Inertia...
- Q Calculate the half-lifetime t1/2 of a 20 kilogram radioactivematerial if on the 50th year, its amount becomes 15 kilogram.Sketch the instantaneous amount of material up to infinity. using adifferential equation.
- Q Compare the Electrical and Electronics Engineeringpathway,discuss about the pros and cons of the pathway.Finallychoose which pathway is ideal for a future demanding industry.BEng(Hons) Electrical and Electronic Engineering(Power Systems)BEng(Hons) Electrical and...
- Q A silicon sample is doped with 4.5 × 1017cm-3 boron atoms. Assume T= 300 K, ni = 1.5 x1010 cm-3What is the hole concentration and electronconcentration?
- Q What is the satellite communication system, how is thecommunication process through it, and what are its types , explainit ?\"I hope the answer is clear to read it\"
- Q Give an example of a closed loop control system and draw its blockdiagram
- Q Draw an equivalent circuit and list the sequence of steps toconnect jumper cables properly between two car batteries whentrying to jump-start a car with a run-down battery. Be sure tolabel...
- Q 1. How does a temperature sensor based on a diode work? Pleaseprovide a qualitative description and Include a circuit.
- Q Explain briefly the driving procedure of the followingsystem using suitable diagrams.i. Electrostatic systemii. Pneumatic system
- Q The controlled full wave rectifier is connected to the grid. Therms grid voltage is 230 Volt at 50 Hz. 24 Volt battery will becharged with 15A. An inductor, which is...
- Q Where are the Galilean Beam Expander and Keplerian BeamExpander used? Give at least two examples of each and elaborate ontheir uses.
- Q Define the limitations in the operation conditions of a p-njunction.
- Q a) How to measure current with an oscilloscope?Describe by drawing a figure. b) Describe how the shape on thescreen will be if volts of Vx= 10.sin (wt) are applied to...
- Q Suppose the velocity of an electric vehicle increases linearly,becomes constant for sometime and then decreases linearly. Sketch this profile and show theregion(s) where thevehicle’s tractive force is negative. Give reason....
- Q For (8) questions only, choose the correct answer1. The variations in pressure and temperature generally have only asmall effect on liquiddensity.o Trueo False2. Ratio between the density of the fluid...
- Q Consider Wein bridge oscillator. If R1 = 3R2 and C2 = 4C1, findthe expression for cutofffrequency. What will be the value of β and the required gain?
- Q What role does introduction Play in a researchProposal?elucidate.( Subject:Techincal report writing)
- Q An ideal long-base Si p-n diode has Na =1017 cm-3, Nd = 7x1016cm-3 and a cross-sectional area of 10-3cm2. (i) If τn = τp = 1 µs,calculate the current flowing...
- Q A 400 V dc shunt motor has a rated armature current of 76 A at aspeed of 1000 rpm. The armature resistance of the motor is 0.4ohm,the field resistance is...
- Q Explain the similarities and differences between convolution ofdiscrete signals and convolution of continuous signals
- Q What does it mean to use an open collector? What role does the \"pull-up\" resistor play? Say device \"A\" wanted to send a \"1\" on the wire, what would device A...
- Q Compare the brushed motor (DC motor) and a brushless motor(Induction Motor) in FIVE aspects.
- Q -What is the importance of determining the characteristics (Zin,Zo, AV, Ai) of the voltage amplifier (BJT) ?- What is the importance of using the capacitors (CB, CC, andCE) in voltage...
- Q Consider a secure communication channel where communication willstart if the receiver detects the following sequence:A=1, B=0 --> A=0, B=0 --> A=0, B=1Draw a FSM state diagram with 2 inputs, first...
- Q Differentiate between Verbal and Non-Verbal Communication. Whichone is preferred by researchers in engineering field?
- Q how to calculate External Quantum Efficiency from I-V-L graph?Explain in details.
- Q When we choice the Energy or Coenergy as the statefunction in determination of magnetic force and torque ?
- Q Provide answers for the following:Compare condition based maintenance with planned preventivemaintenance. In your own words explain which one you think is a betteroption and why.
- Q B) Write a program to find the sum of the values ​​A5H, 69H,E2H and CCH. Put the result in the R2 for high byte and R4 for lowbyte. What is...
- Q MOS Capacitor. If i have a MOS capactitor with: tox=0,1 µm,T=300 K, ND= 1015cm-3 . Supposingideal contact, and null flat band potential VFB=0 V. Howdo I find the substratum electric...
- Q Design and draw a Flyback converter to supply 12V, 5V, and 3.3Vfrom a 120 Vdc supply. 20W is output power, and switching freq. is100,000 Hz. The inductor current ripple can...
- Q Should simulate at Tinkercad with UNOimages.For this project you are encouraged to come up with your owndesign.Example project:Implement a musical instrument using an Arduino, Push buttons/keypad, LEDs, Piezo Speaker(s), potentiometer...
- Q Describe the types and differences in the assemblyinstructions of 8051 microcontroller
- Q Define the following:a) What is a circuit breaker and where is it used in a buildingelectrical system?b) What is a fuse and where is it used in a building electricalsystem?c)...
- Q What is the transient stability of the electric drive? fulldetails
- Q 3.- Design a variable voltage source from 1.25 to 20V with theLM317 voltage regulator. This source will be powered by 127Vac @60HZ from CFE. Determine the following:a) complete schematic circuit.b)...
- Q In MPLAB write and compile (using the simulator) anassembly language program withthe following functionality:Configures pin RA2 of the PIC24to be an output to control anattached LED.Configures pin RB13 of the...
- Q Find the modified z-transform of the following functions: (a)E(s) = 6/ (s + 1)(s + 2)(s + 3)
- Q A communication network has a bandwidth of 10 kHz. Calculate thesignal-to-noise ratio in dB if the capacity of the channel for a100Kbps [2 Marks]ii. A communications channel with a bandwidth...
- Q Â Design an active low pass filter with a corner frequency of 50 Hz and amplification of 10. Pick the values of the resistor and capacitor based on your own judgement...
- Q Show with numerical judgement the voltage at Node A impact should R4 fail open. Vs1 = 10 volts // R1 = 170 ? // R2 = 100 ? // R3...
- Q TASK:Each of the following generators is going to supply a load of10kw at a power factor of 0.8 (If AC, if DC 1) for 24hrs, each ofthem will run at...
- Q l. what is the difference between a real independent voltagesource and an ideal independent voltage source? Give an example ofa real voltage source and explain how it differs from theideal.2....
- Q Define a target type/usage environment where millimeter-waveradar, infrared (IR), hyperspectral, laser radar (LIDAR) sensorswill provide performance superiority.
- Q The surface ? = 0 separates two perfect dielectrics. For x >0 ??1 = 3 while ??2 = 5 where ? <0. If ?? = 80?? - 60?? - 30???/?,...
- Q A. In thermal equilibrium, how do electrons acquire the energynecessary to move from the valence band to the conduction band?B. Write expressions for the electron concentration in theconduction band at...
- Q Construct a bridge-controlled rectifier with R-L loads usingMatlab/Simulink software. Circuit parameters – can be eithercalculating, refer to any sources (textbook, journal, or technicalmanual) or assumptiona. Describe the circuit designed, parameters...
- Q Calculate the resistivities of intrinsic Si, GaAs, and Ge at 300K
- Q An RLC circuit consists of a resistor R = 12 LaTeX: \ OmegaΩ, acapacitor C = 0.1 F and an inductor L = 2 H. A voltage source isconnected that...
- Q c++Language materialchoose the correct answer please:1-lineto(x,y); after execute this command then x and y becomethe new reference pointFalseTrue2-The declaration that is needed for communication between thefile and the program is...
- Q A3.5 current source is connected to a 220 ohms load. The sourceresistance is 6kohms. Solve for the equivalent voltage source (Eand Rs) for this practical source.
- Q Describe two types of fields pertinent to electronic circuits,and explain why there are no ideal resistors, capacitors orinductors.
- Q Attach a screenshot of Multisim circuit. circuit outputequations are F1 = ∑ (1,3,5,7,9,15), F2 = ∑ (0,2,4,6,8,10,14),design the circuit on Multisim using 8x1 MUX and 16x1 MUX. Thecircuit with probes...
- Q Latches are commonly organized into groups of 4-bits, 8-bits ormore into registers.1 pointTrueFalseAn asynchronous counter is one where all stages of the countertrigger together.1 pointTrueFalsePull-up resistors and special interface ICs...
- Q a) What is the advantages of using a wound-rotor type ofinduction motor? Under what conditions?b) When starting a wound rotor induction motor, what is thesupposed value of resistance of the...
- Q which type of the dc generators has the poorest voltageregulation
- Q Frequency Modulation(Simulation):Briefly discuss sometechniques that you could use to modify the modulation index, andalso, to increase the signal bandwidth for this FMsignal.      Â
- Q Part 1: Solve the operation 75.38-18.62 in binaryusing two's complement. Use 6 bits for the fractionary part.Part 2:Convert the result to a decimal, and explainhow much is the absolute error...
- Q Describe the functions provided by the microcontrollerPIC24FJ256GB106 whihc is used in printers such as HP Office Jet6000?only functionality, no features needed
- Q Design an experiment setup for determination the time constantof a thermistor?
- Q energy andpower of signals.(a) Plotthe signal x(t)=e−tu(t)and determine its energy. What is the power of x(t)?(b) Howdoes the energy of z(t)=e−∣t∣,−∞<t<∞, compare to the energyof z1(t)=e−tu(t)?Carefully plot the two signals.(c)...
- Q Sketch the energy band diagrams for metals, insulators andsemiconductors and explain the how they differ based on thebandgap, density of states and conductivity.
- Q Two common load components for electrical energy is Heat(Heater) and Light (Lamp).Please research the material used to construct these loadelements and provide a summary.1- Performance Property of Material2- Different materials...
- Q 1. Explain briefly the operation of a bi-polar transistor as aswitch.
- Q a. Calculate the electron density (your unit should be correct)for a CNT at T = 0K. Assume that the Fermi level is at Ef = 1eV andthe bottom of the...
- Q 5.4 Explain the following terms:(a) calibration chain(b) traceability(c) standards laboratory
- Q Briefly describe (10 to 15 sentences) how an analog oscilloscopedisplays a periodic waveform. Assume the trigger is set to the samechannel as the periodic waveform being displayed. Be sure toclearly...
- Q 1. Give an example in which regression toward the meanmight occur?2. Write out an example of a question and responses,using EGWA scale?
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