UPSC Books – Mechanical Engineering
Problems from PK Nag resemble problems of Exam
C&B is excellent to understand the concepts.
2. Fluid Mechanics and Fluid Machinery
R K Bansal for Problems.Very critical subject you can’t clear the exam without mastering it. It can have weightage of 40% itself.
3. Power Plant
4. IC Engine – Mathur and Sharma
5. Refrigerartion and Air Conditioning
Very Scoring subject especially in conventional. Try to read CP Arora for some theoretical portion.
6. Heat and Mass Transfer
Read Class notes or any book for this subject . Easy portion.
PAPER – 2
1. Theory of Machines
RS Khurmi is more than sufficient. Problems are good and enough in numbers.
2. Strength of Material
You can refer any college book.
3. Machine Design
V B Bhandari selectively for problems and theory. This is more than sufficient.
4. Industrial Engineering
You can use University referred books and Coaching Notes. This is the most fragmented subject.
5. Materials Science
Kalpakjian, it has in concise and more relevant form.
6. Production Engineering
You can use University referred books and Coaching Notes.
There is nothing different between syllabus of ESE paper and IAS Mechanical Engineering paper. SO start preparing from standard books for ESE and IAS Optional will be a cakewalk for you.
And this is not just my advice, many aspirants who take Mechanical Engineering as Optional subject also give ESE examination, which strengthens their subject knowledge and also act as a support if they’re unable to clear IAS.
So, if I suppose that you start preparing for ESE then these all resources would sufficiant.