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WorksheetsQuiz 3: Protection Against Electric Shock
Total questions: 10
Worksheet time: 20mins
Please choose the measures to provide basic protection.
Basic insulation
Covers or enclosures
Out of arm reach
Protection provide by obstacles
What is the name of this device?
Miniature circuit breaker
Air circuit breaker
Residual current device
Moulded case circuit breaker
Please choose the correct earthing system.
TN-S
TT
TN-C-S
IT
What is the meaning of this diagram
Earthing network
RCD operation
Basic insulation
Socket termination
What does it mean?
Indirect Contact
Earth Fault
Direct Contact
Over current
Which description is true about SELV?
As long rated voltage of AC 25V or DC 60V, basic protection is required
The bodies of equipment and circuits must not be grounded on the secondary side
Secondary side connection of the circuit or equipment bodies is grounded for operational reasons
Primary side and secondary side must be grounded
Please choose electrical equipment using protection class 1
Hair dryer
Cordless Drill
Food blender
Kettle
Why there is no effect of electric shock occurs on the bird?
Bird standing on neutral line
Both of the bird's feet is high resistance
Both of the bird’s feet touch the same line
One of the bird's feet is not touch the line
What is the protection class of this equipment?
Protection class 1
Protection class 2
Protection class 3
Protection class 4
Which of the following is an insulation material
?
Polyvinyl Chloride (PVC)
Unplasticized PVC (uPVC)
Paper
Copper
