A polyhedron is said to be a truncated polyhedron when you cut across its original vertices to develop a new facet in place of each vertex or polytope vertex to be more specific. So in simple words, truncation is the process of cutting at vertices to produce new facets on the same polygon.
Depending on the depth of cut, where and how it is applied there are different types of truncation that can be applied on a polygon, Ex: Uniform, Shallow, Edge, Partial, etc.
You can refer this page on wikipedia for more info - https://en.wikipedia.org/wiki/Truncation_(geometry)
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Every year the colleges face a tough competition for best ranks, based on parameters like education, campus, faculty and placements (to name a few), and according to the latest ranking, here is a list of some of the best colleges you may want to apply.
1. School Of Planning And Architecture, Delhi
2. Indian Institute Of Technology, Kharagpur
3. Sir J. J. College Of Architecture, Mumbai
4. Birla Institute Of Technology, Mesra
5. Jadavpur University, Kolkata
6. Chandigarh College Of Architecture, Chandigarh
7. Jamia Milia Islamia University
8. National Institute Of Technology, Tiruchirapalli
9. Center for Environmental Planning and Technology University, Ahmedabad
10. Manipal Institute of Technology, Manipal
Generally, there is no much competition in this architecture field when compare with engineering.This field is perfect for those who are interested.And also its a different way to design our future.And don't worry about salary.Better to get seated in top colleges and better to get employed in top companies.
As per the information given in the NATA brochure you need to score a minimum of 50% marks in your 12th class exams with mathematics as your compulsory subject to apply for architecture colleges.
Answering to your second question
based on the total score you get ( 50% of 12th score + 50% of NATA score), ranks are given.I hope you got the answer.
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Escalators are used for vertical cum horizontal movement. e
Elevators are used for vertical movement.