I applied for the Control Systems stream. The last stage was the on-site interview after 2 HR rounds and one technical round. Technical Round: The questions were divided into clear sections just like the telephone one. They expected you to know the answer properly and answer most of the questions. I don't remember all of them, sorry. - Find eigenvalues and eigenvectors of a 2x2 matrix - Find the maximum area of a rectangle under a curve You have to write the expression for y from the equation of the curve. Area =x*y. Differentiate, equate to zero and find the value of x for which the area is maximum. Then take the second derivative and check if the value of the function is <0 - Write a recursive function to determine the factorial/fibonacci numbers - Write pseudo code for any sorting algorithm - Write an algorithm to draw a section of an arc if the topmost is a point (y,0) - Some inheritance questions - They gave me a snippet of a code that copies one string to another and asked me what the function does - Find the bug in a piece of code. - Pointer questions like *++q and ++*q - Draw the responses of differently damped systems for a 2nd order linear system - What happens if there are zeros in the system - Lead-lag compensators - Lyapunov stability - Controllability and Observability HR and manager rounds - How are you with working in teams? - How would your supervisor describe you? - What do you think your supervisor thinks your main weakness are? - Can you handle multiple responsibilities? - What is your prefered supervision style? - If you could not do any control systems at all in this role, how will you handle it? Will you be okay with it?

Difference between open and closed loop systems? Impact of RHP on stability? Difference between compensator and filter?