WorksheetsChapter 7 (2) : Electrical Installation Systems
Total questions: 10
Worksheet time: 5mins
The installation of electricity in building can be divided into:
Fittings
Wiring
Earthing System
All of the above answer
What is the primary purpose of earthing in an electrical system?
To increase the voltage supply.
To enhance the speed of electrical flow.
To store electrical energy for later use.
To reduce the risk of electric shock from leakage current.
What can happen if an electrical system is not properly earthed?
The power supply becomes unstable.
There is a risk of severe electric shock.
Appliances will stop working.
The system will consume more electricity.
What is the main function of the electric meter in a building's wiring system?
To record the electricity consumed in kilowatt-hours.
To supply electricity to the house.
To regulate voltage levels.
To protect appliances from power surges.
What is the purpose of a fuse in an electrical system?
To supply electricity to appliances.
To store electrical energy.
To convert electricity to a lower voltage.
To protect against excess current.
What are the two main types of wiring circuits used in buildings?
Ring Circuit and Loop Circuit
Radial Circuit and Parallel Circuit
Ring Circuit and Radial Circuit
Series Circuit and Parallel Circuit
Which wiring system is generally considered more cost-effective due to reduced copper usage?
Radial Circuit
Ring Circuit
Series Circuit
Parallel Circuit
Which of the following is NOT one of the main electrical fittings?
Cable
Conduit
Trunking
Circuit Breaker
What are the two types of cables used in electrical installation?
PVC insulation and Copper Core
PVC insulation and Mineral insulated copper covered cable
Aluminum Wire and Steel Wire
Fiber Optic and Coaxial
Which material is used for conduit fittings in electrical wiring?
PVC and Steel
PVC and Aluminum
Copper and Rubber
Steel and Fiber
