For the recent event at Walsall only one student gave an answer, but it was a good one. It isn't perfect, so don't take absolutely everything here as 100% correct, but it is the sort of answer you should be aiming to produce in the exam.
He has agreed it can be shared here to help others.
The question was:
Lineside signals and indicators can be illuminated with conventional filament lamps or with LED technology. Describe the relative advantages and disadvantages of each of these technologies. As a minimum you should consider:
a) Design considerations; and [6 marks]
b) Installation and maintenance; and [7 marks]
c) Reliability. [6 marks]
If the technologies were to be intermixed in a localised area, describe what technical and operational considerations might have to be made. [6 marks]
He has agreed it can be shared here to help others.
The question was:
Lineside signals and indicators can be illuminated with conventional filament lamps or with LED technology. Describe the relative advantages and disadvantages of each of these technologies. As a minimum you should consider:
a) Design considerations; and [6 marks]
b) Installation and maintenance; and [7 marks]
c) Reliability. [6 marks]
If the technologies were to be intermixed in a localised area, describe what technical and operational considerations might have to be made. [6 marks]
PJW