Hi Srestha,

It is absolutely fine even if your signature looks very small. As long as your signature on the ID proff matches with that on your admit card it will be acceptable. Also, in CAT you upload a scanned copy of your signature but in ID proofs it is a digital signature. So there may be small variations which is acceptable.

You don't need to panic. It will be accepted. Anyway you can also carry a soft copy in Mobile or mail it to yourself so that if required you can download it, zoom it and show to them.

Dear Srestha, your signature is what you would have scanned and uploaded. And when it comes on the admit card, it might not be like your original hand signed. As long as it is your signature and you can replicate it when asked to, the size of the signature doesn't really matter. That will not be an issue.