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WorksheetsWeek 4_Electrical Installation Part 2
Total questions: 10
Worksheet time: 8mins
All the below are the component for The Distribution Of Single Phase Supply, EXCEPT:
JUNCTION BOX
CUT OUT FUSE
GENERATOR
DISTRIBUTION BOARD
What is the function of Cut Out Fuse?
To connect between cable of power supply to the building
To protect excessive current and limiting power load
To complete the flow of electricity back to the power source
To measure the amount of power that a consumer used hourly
What is the advantage of Miniature Circuit Breaker (MCB)?
Very cheap
The supply may be restored by an skilled operator
Required regular testing to ensure satisfactory operation
A faulty circuit may be easily identify and restored
What is the function of Earth Leakage Circuit Breaker (ELCB)?
To switch off ( cut-off ) power supply
To connect all metalwork and wiring system to the earth.
To complete the flow of electricity back to the power source
For the protection against electrical leakage
All the below are type of Fuse, EXCEPT:
Rewirable fuse
Cartridge Fuse
Low Capacity Fuse
High Capacity Fuse
All the below are Lightning Protection Key, EXCEPT:
Antenna must connected to roof conductor.
Surge protection devices installed at electronics in house.
Maximum of two ground rods at least 10 feet deep.
Connect gutters or other grounded metals as required.
Where is the Location that Lightning Arrestors Are Needed?
Structure that are less than 53m high (pylon)
At hilly or high area
Structure and its contents are not sensitive to lightning
Bus station
Protective devices are very important because it is...
… for safety of non-electrical devices
… detect the abnormal faulty condition.
… remove human problem.
… connect the faulty elements to the system.
What is function of Lighting Arrestor?
To switch off power supply.
To measure the amount of power that a consumer used hourly.
To protect a tall building or structure from lightning strike.
To complete the flow of electricity back to the power source.
Kilowatt Hour Meter is a device to measure the amount of power that you used hourly installed by TNB. Suggest any action that can be taken to reduce the usage of electricity power in your house.
