Diploma

Hi Pankaj,
Here is the link of all the colleges offering Diploma in electrical in Delhi:
https://www.shiksha.com/engineering/colleges/diploma-electrical-engineering-colleges-delhi-ncr
Feel free to raise more queries.
All the best.

Yes, there is a provision for lateral entry. You can appear for LEET examination or take admission in the second year on the basis of your percentage of Diploma.

You can check: http://www.ouat.nic.in/agro_polytechnic

Obviously a Masters in mechanical is the best option as it is more valuable than Post Diploma.

Yes, it is quite possible. There would be added benefits from the Diploma at the time of placements too.

Yes, we do offer Diploma in Electrical Engineering. Besides, we also offer Mechanical, Civil, CE and E&TC in our college.

MBA in international business is a better option over Diploma in foreign trade as it has more job opportunities and career growth avenues.

You have lateral entry facility to enter into Bachelors degree.
You can try for LEET.

Safety and fire engineering is an excellent field. It offers a lot of job opportunities abroad. If you are planning to do a PG course. Please do it from a reputed university/college like UPES-Dehradun or CUSAT. And yes try to do NEBOSH.