Question 1: Discuss any three parts of Sultanate of Oman where dug wells are used for water supply.
Question 2: The desalination plant in Barka needs power supply to function. Suggest the types of wiring materials that can be used and give two reasons for your suggestions.
Question 3: Why is insulation provided for electrical wiring in our homes but not for heavy voltage transmission lines from distribution centers? Provide a reason for this and also explain how electric shock from transmission lines is prevented.
Question 4: Air conditioners are normally installed at a height in rooms and room heaters are installed at floor level. Give reasons for this.
Question 5: Which electrical connections are used to supply three-phase power to buildings? Explain and compare them.
Sample Solution
