CAT

There is no specific number for this. It depends on the exam pattern and difficulty level of the paper that year. You just need to do maximum correct questions you attempt.

You can try for the following colleges:
1. IMT - Ghaziabad
2. International Management Institute (IMI) - New Delhi.
3. FMS.
4. Lal Bahadur Shastri.
5. FORE
6. Indian Institute of Foreign Trade.

You can check the below mentioned link:
https://www.shiksha.com/top-10-coaching-institutes-in-india-for-mba-entrance-preparation-article-11477-1

It depends on how much effort you are ready to make for the same. CAT 2017 is 13 months away, so channelize your efforts and utilize your weekends well. Enroll in a good mock CAT test series to constantly evaluate, where you stand.

You can visit the below mentioned link:
http://simsree.org/academia/full-time/

CAT exam coaching duration is 6 to 7months based on the institute. Ideal time for joining coaching is final year (i.e. June to November), so that you can write exam in December. TIME institute is good.

Hello Anil,
B.Tech is all about the technical aspects, MBA teaches a lot about management and administration of business.
For a B.Tech (EEE) student, MBA turns out to be useful if you're planning to start your own business / company. Certain companies also keep it as a mandatory eligibility criteria for promotion or recruitment to senior managerial positions.
Since, you already have a career of over 5+ experience, I would not suggest you to leave your job. Rather, you could opt for correspondence MBA while you continue with your job.
I hope it helps.

You will be eligible to appear for CAT examination in the final year of your graduation degree.

In order to crack CAT, you need to score very high in numerical ability section of CAT examination. If you are weak at mathematics, you may face difficulties therefore, you are advised to work on your numerical and data interpretation abilities by taking external support.

One year is apt for the preparation of CAT exam. You can start accordingly.