Previous Year Question
Which underground cable is suitable for transmitting electricity to a residential building from the street?
Correct answer: D
Explanation
An underground electrical service cable needs robust insulation and mechanical protection against soil pressure, accidental impact and handling. Armoured power cable provides this protection and is suitable for such service.
Step-by-step solution
Correct Answer
D — Armoured cable
Explanation
An underground electrical service cable needs robust insulation and mechanical protection against soil pressure, accidental impact and handling. Armoured power cable provides this protection and is suitable for such service.
Key Concept
Armoured Service Cable
Exam Point
Underground power service → armoured power cable.
Exam tip
Underground power service → armoured power cable.
Quick method
Underground power service → armoured power cable.