Question

^{1. GIVE Real-life examples design rationale approachis is carried out in EET Careers}

Answer 1

There are basically five steps in the process of designing a EET device which comes across in our daily life. Solving a design problem is a contingent process and the solution is subject to unforeseen complications and changes as it develops .The solution might vary with person to person .Following are those five steps that should be adopted to design a problem statement :

1. Define the problem: think over the problem and find a suitable solution path to follow.

2. Gather pertinent information: gather sufficient information for the problem statement.

3. Generate multiple solutions: it will be better if more than a solution is available to us.

4. Analyze and select a solution: analyze the solution and find a expected solution of it.

5. Test and implement the solution: test the solution designed.

Some examples include:

• Engineering management.
• Telecommunications.
• Signal processing.
• Medical technology and devices.
• Instrumentation.
• Integration Engineer.
• Control.

Let say a transformer unit is to be set-up in a power plant, the transformer is a step- up transformer which is used to transform the input supply from generator to the distribution centre.

Firstly, the site where transformer is to be set-up, is inspected for the transformer .The dimension of site is so chosen where the transformer get natural supply of air for cooling . The proper space utilization is must. The base is properly cemented and levelled .

Second the requirement of power handling capacity is inspected for the usage. The transformer is so designed that the power transferred is dependent on the voltage rating, turn ratio, current rating, temperature rating , etc.

The cooling of transformer is made both air cooled (both natural and artificial) and water –cooled dependent on the power that is handled by it.

Since the transformer transforms the input alternating power which is very high. So, it can’t be directly tested on such high power. That’s why it is tested on the kit which produces the same effect on the dc supply.The kit is used to check the voltage rating, curret rating, iron losses, copper losses, hystersis plot,etc.

The transformer is pivotted on the cemented floor effectively as it is a stationary electrical device but it is of high strength.

At last , it is connected to the supply from the generator through cables and hollow conductor after propering measuring the ower and after providing proper insulation to it.   

In this example, we see that the five step are followed efficiently.