Engineering

15.3. 500 kg of air is supplied per minute to an auditorium maintained a: 21°C and 23 per cent RH. The outside air at 5°C DBT and 60 per cent RH is first passed ova heating coils and is heated until its WBT is equal to the room WBT. It is the passed through an adiabatic saturator and is finally heated to 45°C before being supplied to the room. Determine: -(i) The heat added in both the heating coils. (ii) The mass of water evaporated in the air washer. 13

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Two cars of the same mass run head-on into each other at C. After the collision, the cars skid with their brakes locked and come to a stop in the positions shown in the lower part of the figure. Knowing that the speed of car A just before impact was 5 mi/h and that the coefficient of kinetic friction between the pavement and the tires of both cars is 0.3, determine (a) the speed of car B just before the impact, (b) the effective coefficient of restitution between the two cars.

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4) Implement the Bode plot from the previous homework in a GUI based program.

EXPERT ANSWER The required code and test output are given below:- CODE:- clcclear all M = csvread(‘bode.txt’);% Get each column data into separate arraysfreq = M(:,1);amp_db = 20*log10(M(:,2));phase = M(:,3);% Create subplots for amplitude and frequencysubplot(2,1,1);semilogx(freq, amp_db,’LineWidth’,3);title(‘Bode Diagram’)ylabel(‘Amplitude (dB)’)grid on subplot(2,1,2);semilogx(freq, phase,’LineWidth’,3);ylabel(‘Phase (Rad)’)xlabel(‘Frequency (Hz)’)grid on Sample data used to test the code 10,1,050,1,0100,0.8,0400,0.7,-0.1800,0.6,-0.21000,0.5,-0.410000,0.5,-0.5100000,0.3,-1 TEST OUTPUT:-

Provide an example of each threat action and identify the CIA affected in each threat. Threat Example CIA affected Spam and Phishing Viruses Worms

EXPERT ANSWER First we explain about CIA:- CIA means confidentiality, integrity and availability. It forms a triad of confidentiality+integrity+availability. Now, we explain the Spam and Phishing threat and the example of spam refers the electronic junk mail or unwanted mail that are received on your computer. The example of  phishing is email and link to collect some important information …

Provide an example of each threat action and identify the CIA affected in each threat. Threat Example CIA affected Spam and Phishing Viruses Worms Read More »

PROBLEM SOLVING:A property of 1 hectare light foliage lot with 368 trees (diameter ranges from 200 to 250 mm) is donated to the Municipality of Sto. Tomas for the construction of the proposed new Municipal Hall and Multi-purpose Covered Court. Three hundred trees will be cut down to accommodate the structures while the rest will remain for aesthetic and perimeter fencing (boundary) purposes. The foliage undergrowth must be cleared so that it will not be a habitat for mosquitoes and wild animals. Fifteen (15) laborers were employed for the activity with a salary of 350 per day and 4 Stihl Chainsaw Ms 070 of 2-man gang @ P18,500.00 each for free cutting. The work started March 4, 2021 and ended April 2, 2021. No Saturday and Sunday works. The common excavation will generate a volume of 760 cu.m. While the actual structure excavation will generate an additional excavation of 350 cu.m. There are 2 D6 Bulldozers rented for excavation.

Determine the following: (show complete solution with appropriate explanation if necessary, then highlight final answer)1) For ACITIVITY-CLEARING AND GRUBBING (Removal of trees and foliage undergrowth), determine the total duration20 For ACTIVITY-CLEARING AND GRUBBING (Removal of trees and foliage undergrowth), determine the total cost3) For ACTIVITY-EXCAVATION, determine the total duration EXPERT ANSWER Area = 1 hectare …

PROBLEM SOLVING:A property of 1 hectare light foliage lot with 368 trees (diameter ranges from 200 to 250 mm) is donated to the Municipality of Sto. Tomas for the construction of the proposed new Municipal Hall and Multi-purpose Covered Court. Three hundred trees will be cut down to accommodate the structures while the rest will remain for aesthetic and perimeter fencing (boundary) purposes. The foliage undergrowth must be cleared so that it will not be a habitat for mosquitoes and wild animals. Fifteen (15) laborers were employed for the activity with a salary of 350 per day and 4 Stihl Chainsaw Ms 070 of 2-man gang @ P18,500.00 each for free cutting. The work started March 4, 2021 and ended April 2, 2021. No Saturday and Sunday works. The common excavation will generate a volume of 760 cu.m. While the actual structure excavation will generate an additional excavation of 350 cu.m. There are 2 D6 Bulldozers rented for excavation. Read More »