Placement Papers - Essar

1.what is critical speed of shaft?
  in industries most of the turbines are run above critical speed,,what is reason?

2. What is combine power generation?
3. How to select milling cutter?
4. What is probability?types of probability...i,i conditional etc.....
5. what is relation between complimentary function and particular integral? from diff,equation...
6. express your self?
7. how helicopter flows?
8. explain your project?

All the best guys!!!