Engineering Answers

A steam pipe 100mm external diameter is to be lagged with two layers of different lagging material each 25mm each material A has a coefficient of thermal conductivity of 0.052W/mk while that of material B is 0.086W/mk Determine which of the two lagging materials must be on the inside to produce the best insulation arrangement if the internal surface temperature is 320°c and the external surface temperature is 20°c Determine the heat loss/h a 10m run of lagged pipe with the best lagging arrangement

steel pipe 150mm external diameter conveys steam at a temperature of 260 degrees and is covered by two layers of lagging, each 50mm thick. The thermal conductivity coefficient of the inside layer of lagging is 0.086W/m.K while that of the outside layer is 0.055W/m.K. The outside surface temperature of the steel pipe can be taken as the same as the temperature of the system. The ambient temperature is 27 degrees. Calculate the heat lost per hour for pipe length 30m. Calculate the interface temperature between the two layers of lagging

A refrigerator room has a wall 6m long and 3m high. The wall is built of 120mm thick brick, insulated on the inside with an 80mm layer of cork faced with a thin metal sheet. The coefficient of thermal conductivity of the brick is 1.15W/mK while that of the cork is 0.043W/mK. The exterior brick surface temperature of the wall is 21 degrees Celcius and that of the interior metal faced surface is -4d egrees Celcius throughout. Estimate the heat leakage through the wall in 24 hours and also the temperature of the interface between the cork and brick. 

1. A composite wall is made up of two layers of bricks each 100 mm thick with a 50 mm air space between them. The coefficients of thermal conductivity are
2. Inside brick - 0.6 W/m K
3. Air - 0.025 W/m K
4. Outside brick - 0.8 W/m K
5. The wall is 6.15 m long and 5.5 m high.
6. a. Determine the heat loss per hour through the wall if the inside face temperature is 24^oC and the outside face temperature is 7^oC
7. b. Determine the interface temperatures

Looking at Run time error, My main field is not c++ computer programming. so mistakes can be occurred.

#include <iostream>

using namespace std;

const int MaxSize = 10;

// Implementation of functions

void insert(float a[], int& n, float x)

{

if (n == 0 || a[n - 1] <= x)

{

a[n] = x;

}

else

{

a[n] = a[n - 1];

int i = n - 1;

insert(a, i, x);

}

if (n < MaxSize)

{

n++;

}

}

int main()

{

float a[MaxSize];

int n = 0;

// Test

float testArray[] = { 20.0, 5.0, 30.0, 50.0, 2.0, 50.5, 25.5, 40.0, 100.0, 80.0, 70.0 };

for (int i = 0; i < 11; i++)

{

insert(a, n, testArray[i]);

}

for (int i = 0; i < n; i++)

{

cout << a[i] << "\n";

}

// To pause

cin.get();

cin.get();

return 0;

}

On my Machine This Program Executes Where the Prototype Occurs and definition occurs.

 regards;

so how to remove run time error.

regards;

Extra address space is allocated by the operating system to easily run application. elaborate on this with proper method and strategy of page swapping?[10 marks]

Principle are performed to bring data into cache, so that low amount of miss ratio is observed?[5marks]

In this method while sending the data towards destination a proper method of accepting that data packet is performed so the source known that the data has been received elaborate with diagram and example.[10 marks]

Both ammeters in the circuit shown in Figure 2 indicate 1.7 A. If the source supplies 300 W to the circuit, find 𝑅1 and 𝑅2.

Based on Figure 3, answer the following questions: (i) Find the Thevenin voltage 𝑉𝑇𝐻 at terminal A-B. (ii) Find the Norton current 𝐼𝑁 at terminal A-B. (iii) Calculate the Norton resistance by using answers from (i) and (ii). (iv) Draw the Thevenin equivalent circuit.