Can PR holder (relative) based in Melbourne can sponsor for 3 year Engg. Course?
There is list of acceptable sponsors who can be considered to sponsor financially. You can also find further information from the Department of Home Affairs website below. https://immi.homeaffairs.gov.au/visas/getting-a-visa/visa-listing/student-500
can you give assurance for the admission in Australia?
It depends on your overall profile and grades
which city is good to study as far as indian or tamilian is concern
Major population of Indian students reside in Sydney and Melbourne