B.Tech

Dear Pradip,
B.Tech is a graduation, you have to complete Master or post Graduation level and then M.Phil is also a step, For Ph.D in any stream you have to pass all the steps, you can't apply by doing Graduation. FYI more details:
ADMISSION ELIGIBILITY:
A candidate is eligible for Admission and Registration for Ph.D. programme provided he/ she has qualified:
Masters Degree of any recognised University/other qualification in a relevant field. The minimum qualifying marks are 55% at Post Graduation level (Relaxation of 5% of marks, from 55% to 50%, or an equivalent relaxation of grade, may be allowed for those belonging to SC/ST/OBC/Differently-Able and other categories. )
then In the Entrance Examination conducted by the University at the national level on the pattern of UGC followed by interview.

Dear Srinadh,
B.Tech is a graduation, you have to complete Master or post Graduation level and then M.Phil is also a step, ADMISSION ELIGIBILITY:
A candidate is eligible for Admission and Registration for Ph.D. programme provided he/ she has qualified:
Masters Degree of any recognised University/other qualification in a relevant field. The minimum qualifying marks are 55% at Post Graduation level (Relaxation of 5% of marks, from 55% to 50%, or an equivalent relaxation of grade, may be allowed for those belonging to SC/ST/OBC/Differently-Able and other categories. )
then In the Entrance Examination conducted by the University at the national level on the pattern of UGC followed by interview.

Dear Chetan,
B.Tech is a graduation, you have to complete Master or post Graduation level and then M.Phil is also a step, ADMISSION ELIGIBILITY:
A candidate is eligible for Admission and Registration for Ph.D. programme provided he/ she has qualified:
Masters Degree of any recognised University/other qualification in a relevant field. The minimum qualifying marks are 55% at Post Graduation level (Relaxation of 5% of marks, from 55% to 50%, or an equivalent relaxation of grade, may be allowed for those belonging to SC/ST/OBC/Differently-Able and other categories. )
then In the Entrance Examination conducted by the University at the national level on the pattern of UGC followed by interview.

Preparation tips for GATE
Tip 1: "Begin the preparation"
Tip 2: Know your GATE 2019 Syllabus, Exam Pattern thoroughly. Tip 3: Know the Weightage of Topics in GATE 2019. Tip 4: Make your Study Plan for GATE 2019. Tip 5: Which Books & Resources to use for GATE Preparation? Tip 6: Also Focus on Engineering Mathematics and General Aptitude
GATE Preparation Books/Study Material for ECE by Made Easy
1. A Handbook for Electronics Engineering.
2. PSUs : Electronics Engineering Practice book.
3. GATE-2019 : ECE Solved Papers.
4. GATE & ESE-2019 : Engineering Mathematics.
5. General English for GATE ESE and PSUs.
6. GATE & ESE- 2019 Reasoning & Aptitude.