Hello sarayu,

if you don't get login details to you are registered for number please follow the steps it may help you:

Type TSEAMCET (space) 01 (space) Your HTNo and send SMS to +91 9731979899 .

NUMERIC CODE = 01 (for Login ID)
XXXXXXXX = Your TSEAMCET Hall Ticket Number
Example :       TSEAMCET 01 43632401

I hope it helps you.