science revision 23/24
Authored by jon May
Science
Professional Development
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56 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why should a temporary earth bond be fitted before cutting into any metallic pipework?
To prevent water leakage
To maintain the earth continuity
To measure the pipe's diameter
To check the water pressure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long should the clamps of a temporary earth bond be left in place?
Until the pipework is replaced
Until the pipework is tested for leaks
Until the permanent electrical continuity is re-established
Until the temporary earth bond is no longer needed
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must all circuits and appliances be protected by according to modern regulations?
An RCD only
A fuse or MCB
A fuse or MCB and an RCD
Isolation switch
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where is permanent de-commissioning done?
At the appliance
At the consumer unit
At the main switch
At the circuit breaker
5.
OPEN ENDED QUESTION
3 mins • 1 pt
What is required for every circuit and appliance for safety?
Evaluate responses using AI:
OFF
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where can temporary de-commissioning be done?
At the consumer unit
At the main switch
At the appliance
At the circuit breaker
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the symbol with a straight line on top of a dashed line represent in electrical diagrams?
AC symbol
Ground connection
DC symbol for rectified current
DC symbol for battery
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