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> what are the fields that i can work in it and the Job opportunities
Pretty much everything needs electrics and signals so pick an industry and work back from there. If you have practical skills you can make opportunities for yourself to work as a specialist contractor with the chance to travel a lot. Or there is plenty of work for research and design.
I've recently seen an estimate saying £950bn will be spent on the worldwide nuclear industry between 2015-2020.
Robotics/mechatronics/4D printing are poised for a boom. How do you like the sound of designing equipment for robots that are to be used in the event of a nuclear cleanup operation?