2365 203 Pt2

What is the most common drawing scale for an electrical installation plan?

• 1:20
• 1:50
• 1:100
• 1:200

Which of the following is a common type of electrical cable?

• PVC
• Wood
• Glass
• Concrete

What is the diversity factor for domestic lighting circuits according to BS7671 On-Site Guide?

• 0.5
• 0.66
• 0.9
• 0.75

Which factor is used for 20mm conduit in a short straight run according to BS7671 On-Site Guide?

• 290
• 460
• 800
• 1400

What is the term used to describe the delivery system of electrical cables within a building?

• Route
• Pathway
• System
• Network

Which type of electrical cable is known for its fire resistance properties?

• Mineral-insulated copper-clad cable
• Fibre optic cable
• Coaxial cable
• Submersible cable

What is the purpose of a diversity factor in electrical installations?

• To reduce circuit overloading
• To increase circuit efficiency
• To improve power quality
• To enhance safety

Which type of electrical circuit is commonly used in domestic installations for sockets to one room only?

• Radial circuit
• Ring circuit
• Series circuit
• Parallel circuit

What is the cable factor for 2.5mm solid in a trunking system according to BS7671 On-Site Guide?

• 11.9
• 8
• 8.6
• 12.6

Which material is commonly used for conduit in industrial electrical installations?

• PVC
• Aluminum
• Steel
• Copper