Answer all questions. Or I will dislike your answer

1. What are waiting times in the system' and 'in the line"? 2. What is a 'transient solution to a queueing problem? What kinds of solutions are tabulated in this chapter? Give an example of a transient behaviour. 3. What are finite queueing tables? 4. How would different Queueing Disciplines affect waiting line characteristics? Explain by giving examples. 5. What is the relation between the server utilisation and average waiting time for customers? What is the practical significance of this relation. 6. In an airline hangar, jet-engines arrive at a rate of 2 per week. A jet engine costs nearly Rs. 1 crore. There are 30 aircraft, each with 4 engines. When an engine breaks down, it is sent for reconditioning, and the engine is immediately replaced by one from the spare engines' bank of the reconditioned engines. If mean rate of reconditioning is 3 engines per week, what should be the optimum number of spare engines to be kept? Note that the cost of unavailability of a plane, if it is grounded, is Rs. 25 lakh per week