question attempt- 2012-Q3

[tfly86]

Hi all, please see my attempt from the 2012 Mod 5 paper. this is question 3 on the paper which reads as follows:

Question 3 (2012)
Describe with the aid of diagrams the operation of the following two systems:

• Joint less track circuit
  
• axle counter system [15 marks]
  

What are the advantages and disadvantages of each system? [10 marks]

Please can you provide comment.

Regards

Tommy