Engineering

Write a program to keep getting first name from user and put them in the array in the sorted orderFor example: if the names in the array are Allen, Bob, Mary and user type a Jack then your array will look like Allen, Bob, Jack, MaryUser will not enter a name more than once.User will type None to end the inputUser will not input more than 100 namesc++
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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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Consider a parallel RLC circuit such that: L = 2mH Qo=10 and C= 8mF. Then the value of resonance frequency a, in rad/s is: O a. 1/250 b. 250 O C. 4 O d. 14 Clear my choice
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Consider a sinusoidal current arranged in a half-wave form as shown in the figure. Assuming current flows through a 1 ohm resistor. a) Find the average power absorbed by the resistor. b) Find the value Cn when n = 1,2,3. c) The proportional value of the power in the second harmonic (n=2). ,
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QUESTION 11What do you understand by an instance variable and a local variable?O A. Instance variables are those variables that are accessible by all the methods in the class. They are declared outside the methods and inside the class.OB. Local variables are those variables present within a block, function, or constructor and can be accessed only inside them. The utilization of the variable is restricted to the block scope.O C. Any instance can access local variable.O D. Both A and B
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DIGITALDESIGN 2 (8) 1st HOMEWORK 1st problem: A combinational network has 4 inputs (A,B,C,D) and one output (Z). The minterm vector of the network: Z = (2,3,8,13,14,15). Realize this network based on a 3/8 multiplexer. The input signals are connected : CAA, B AB, A AC. The 3/8 multiplexer has 8 data inputs (DO, D1, .. D7), 3 address inputs (AA, AB, AC) and one output (Z). The 3 address inputs select one of the data inputs ( AA, AB, AC i) and the IC transfers: Di Z.
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PythonWrite a program to calculate the largest and smallest numbers of six numbers entered by a user and count how often each number appears, display the numbers in descending order by the occurrence.Possible Outcome:Input:Enter a number: 9Enter a number: 1Enter a number: 3Enter a number: 3Enter a number: 7Enter a number: 1Output: Largest number is: 9Smallest number is: 1Number occurrences:1: 23: 27: 19: 1
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The donor density in a piece of semiconductor grade silicon varies as N(x) = No exp(-ax) where x = 0 occurs at the left-hand edge of the piece and there is no variation in the other dimensions. (i) Derive the expression for the electron population (ii) Derive the expression for the electric field intensity at equilibrium over the range for which ND n for x > 0. (iii) Derive the expression for the electron drift-current
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Part B Task 3 a. Write a matlab code to design a chirp signal x(n) which has frequency, 700 Hz at 0 seconds and reaches 1.5kHz by end of 10th second. Assume sampling frequency of 8kHz. (7 Marks) b. Design an IIR filter to have a notch at 1kHz using fdatool. (7 Marks) c. Plot the spectrum of signal before and after filtering on a scale - to . Observe the plot and comment on the range of peaks from the plot. (10 Marks) (5 Marks) d. Critically analyze the design specification. e. Demonstrate the working of filter by producing sound before and after filtering using (6 Marks) necessary functions. Task 4:
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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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A transformer has an input voltage (Ep) of 1000 volts and has 2000 primary windings (Np). It has 200 windings (Ns) on the secondary side. Calculate the output voltage (Es)? 1) 500 volts 2) 50 volts 3) 200 volts 4) 100 volts
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A 12-stage photomultiplier tube (PMT) has 12 dynodes equally spaced by 5 mm and subjected to the same potential difference. Under a working voltage of Vo, the response time of the photodetector is 18 ns and the dark current is 1.0 nA. The external quantum efficiency EQE of the photocathode in the PMT is 92% and the secondary emission ratio 8 of the dynodes follows the expression 8 = AV", where A = 0.5 and E=0.6. (a) Describe the working principle of the PMT. (4 marks) (b) Give the relationship between the working voltage Vo and the response time of the PMT and determine the value of Vo. (4 marks) (c) Calculate the gain of the PMT. (4 marks) (d) Explain whether the PMT can detect single photon per second. (3 marks)
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create a program in pythonUsername GeneratorA feature that generates a unique bootcamp username based on a format andpersonal information.The program should be structured in the following way:1. Your program should prompt a user to input Their First Name, Last Name,Campus and the cohort year they are entering. - It is your choice how you willexpect this input, one by one or in a single string2. Your program should validate user input in the following ways:a. First name and last name name should not contain digitsb. Campus should be a valid campusc. Cohort year should be a valid cohort year - a candidate cant join a cohortin the past3. You will have a function that produces the username from the input provided.4. The user will then be asked if the final username is correct. Let them know whatthe format of the username is and if the final username is correct.See below for an example of the final bootcamp username based on personalinformation:First Name: LungeloLast Name: MkhizeCohort Year: 2022Final Campus: DurbanFinal username:elomkhDBN2022ELO - Last 3 letters of first name (if their name is less than 3 letters you should add theletter O at the end)MKH - First 3 letters of their last name (if their name is less than 3 letters you shouldadd the letter O at the end)DBN - Final Campus selection - Johannesburg is JHB, Cape Town is CPT, Durban is DBN,Phokeng is PHO2022 - The cohort year they are entering
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Energy Efficiency and Auditing CourseHow to improve the energy efficiency of Fossil Fuel Power Plant: Coal Fired Generation Process, through:1. Cooling Towers (Natural Drought)2. Pulverisers (Coal Pulveriser)3. Boiler
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Which of the following regular expression describes all positive even integers? a. 2 b. [0-9]*[012141618] c. [0-9]*0 d. [012141618]*
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In a 2-pole, 480 [V (line to line, rms)], 60 [Hz], motor has the following per phase equivalent circuit parameters: R = 0.45 [2], Xis-0.7 [S], Xm= 30 [S], R= 0.2 [N],X{r=0.22 [2]. This motor is supplied by its rated voltages, the rated torque is developed at the slip, s=2.85%. a) At the rated torque calculate the phase current. b) At the rated torque calculate the power factor. c) At the rated torque calculate the rotor power loss. d) At the rated torque calculate Pem.
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What are the differences between household and industryflowmeters?
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A 415V, 3-phase a.c. motor has a power output of 12.75kW and operates at a power factor of 0.77 lagging and with an efficiency of 85 per cent. If the motor is delta- connected, determine (a) the power input, (b) the line current and (c) the phase current.
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For a nodejs web application app which uses express package, to create an end point in order that a user can form their url as localhost/M5000 to retrieve user information. Here we assume a user want to retrieve information of user with ID of M5000. Note a user can retrieve different informtation if replace the M5000 with other ID. Which is the right way to do it? a. app.get('/:user_ID', (req, res).....) b. app.get('/user_ID', (req, res).....) c. app.listen('/:user_ID', (req, res).....) d. app.listen(/user_ID', (req, res).....)
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Consider a continuous-time system which has input of signal x[t) and output of y[n] - sin Ka. Evaluate and draw the impulse response of the above system. b. Determine whether this system is: (i) memoryless, (ii) stable, and (iii) linear. c. Determine and draw the output of the above system y[n] given that x[n]u[n+2]-[2-2]
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QUESTION 1 Consider a cell constructed with aqueous solution of HCl with molality of 0.001 mol/kg at 298 K,E=0.4658 V gives overall cell reaction as below 2AgCl(s)+H 2( g)2Ag(s)+2HCl(aq) Based on the overall reaction, (4 Marks) (8) Determine G reaction for the cell reaction (4 Marks) d) Assuming that Debye-Huckel limiting law holds at this concentration, determine E (AgCl,Ag) (9 Marks)
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The impulse response of the system described by the differential equation will be +6y=x(t) Oe-u(t) 86-(0) Oefu(t) 01
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Consider the hashing approach for computing aggregations. If the size of the hash table is too large to fit in memory, then the DBMS has to spill it to disk. During the Partition phase, a hash function hy is used to split tuples into partitions on disk based on target hash key. During the ReHash phase, the DBMS can store pairs of the form (GroupByKey -> RunningValue) to compute the aggregation Which of the following is FALSE ? The Partition phase will put all tuples that match (using h) into the same partition. To insert a new tuple into the hash table, a new (GroupByKey -> RunningValue) pair is inserted if it finds a matching GroupByKey. A second hash function (e.g., h) is used in the ReHash phase. The RunningValue could be updated during the ReHash phase.
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Design a rectangular microstrip patch with dimensions Wand L, over a single substrate, whose center frequency is 10 GHz. The dielectric constant of the substrate is 10.2 and the height of the substrate is 0.127 cm (0.050 in.). Determine the physical dimensions Wand L (in cm) of the patch, considering field fringing. (15pts) (b) What will be the effect on dimension of antenna if dielectric constant reduces to 2.2 instead of 10.2? (10pts)
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