No. You will have to pass both Section A and B (total 13 subjects).
For qualification for exemption, click here
2.Is there any exemption for B.Sc. or M.Sc. in Maths?
No exemption. However, you may send a request for exemption (with xerox of marks sheets) in section A (Non Diploma Stream) after getting membership. Coucil of IEI, Kolkata may decide on giving exemption in certain subjects.
For qualification for exemption, click here
3. What is exemption?
An exemption in any subject means that you have NOT to appear in that particular subject. If you pass a subject then it is said that you have been exempted in that subject.
If you passed B. Tech and want to do AMIE in other branch then you need not appear in Section A. It means that you have been exempted to appear in Section A. You will directly appear in Section B.