IELTS

With this score you can get Level 7 program in New Zealand with stay back option.

Hi Chetan, there is no perfect answer. How you prepare depends on your own level of competency. The main thing to remember is to work on both your strengths and weakness. It is seen many times that while test takers are working on ways to improve their weak areas they fumble later on areas which they were good at. Take mock tests, practice as much as you can. Read a lot and keep yourself updated. Above all take study breaks and relax. All the best.

Yes, but it depends on which courses you apply to. Some courses have lower academic requirements and the most in-demand courses have tougher entry requirements. Please mention which courses are you interested in applying for.

No that's not true. The university may or may not provide exemption from ilets depending upon your marks in English. It is mandatory in some colleges irrespective of whether you did B.Tech or some other course.

Almost every week ends you have dates to write IELTS exam in many cities across India. The fees now that s 11300 and you need your passport to book for the exam. Normally you have to book for your exams at least one month in advance.
It is better to take coaching for the exam and normally the coaching centers will help you book for the exam

To do your masters you will not have much schorlarships. few you can apply and try. PHd normally is fully stiphened PROGRAME. First you have to apply with good research proposal get ypur admission and then apply for schorlarships

you need both. IELTS. is a must to prove your English language test. GRE. if the University asks you have to do prove your engineering aptitude

The International English Language Testing System (IELTS) is a test that measures the language proficiency of people who want to study or work in environments where English is used as a language of communication. An easy-to-use 9-band scale clearly identifies proficiency level, from non-user (band score 1) through to expert (band score 9).

You have to appear for one of ielts or toefl to enter the boundaries of a country. This is mandatory. Gre is college admission in good ranked college. Not mandatory everywhere.

4.5 band is very less and I don't think any country who are accepting this band. You need to work hard and at least try to get 6. After that you can apply for New Zealand