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WorksheetsQuiz 1 - Hazards and effects of electrical current
Total questions: 10
Worksheet time: 10mins
What is hazard and a risk?
Anything that could cause harm
How serious that harm could be
Anything that could bring people in safe condition
How much loss of weight could be
What does it mean?
Indirect Contact
Direct Contact
Earth Fault
Over current
Direct contact described as touching of active part such as a bare conductor
True
False
Which one is protection for indirect contact?
Apply over load relay protection
Double layer insulation
Install fuse or circuit breaker
Using Residual Current Device
What will happen to the body if leakage current flowing through the body is 50mA on 2 second
No effect at all
In most cases no harmful effect
Increasing probability of ventricular fibrillation up to 5% approx
Convulsive muscle reaction may occur
Which one in listed below is type of fault?
Earth fault
Shock circuit
Conductor fault
No battery fault
What is RCD rating for basic protection?
19/0.01A
40/0.1A
40/0.03A
40/0.3A
Which method can provide basic and fault protection at the same time?
Obstacles
Residual current protection device
Insulation of active components
Safety extra low voltage
Please choose electrical equipment using protection class 2
Hair dryer
Washing machine
Cordless Drill
Kettle
What is the reasons the birds not getting electric shock circuit?
No current flows
No voltage pontential
Bare conductor has high resistance
Birds have safety shoes
