Dear Piyush

All the courses have good scope in their own fields so I would suggest you to select the course based on your interest , incase you love machines ,automobiles or aircraft you can take up mechanical .

Now coming to EnTc and CS , both can land you in a IT job but taking up EnTC you have a choice between core electronics and telecommunication industry and IT industry , If you take up CS then your choice is narrowed . I am EC graduate myself so , I give you a suggestion that if IT industry is what your interest is choose CS or if your confused between CS and EnTC then go for EnTC your job spectrum would be wide.  

Choose wisely , All the best 

Choosing a branch depends on your interest and passion. All the branches have good scope in the future. If we compare all the branches than CSE is most demading branch and offers good placements.

All the Best!!