List of top Mechanical Engineering Questions on Operations Research

The pessimistic time and optimistic time of completion of an activity are given as 10 days and 4 days respectively. Then the variance of the activity is

In a graphical solution of solving Linear Programming Problem to convert inequalities into equations, they

The penalty of a row in a transportation problem is obtained by

Which of the cost estimates and performance measures are not used for economic analysis of a queuing system?

The activities of W, X, Y and Z are the direct precursors of A. What is the earliest starting time for A, if the activities of earliest finishing times are 12, 15, 10 and 6?

In transportation problem, North-West corner method would yield: A. an optimum solution
B. an optimal feasible solution
C. an initial non-feasible solution
D. Vogel’s approximate solution

A problem in Mathematics is given to three students P, Q and R whose chances of solving it are \(\frac{1}{2}, \frac{1}{3}, \frac{1}{4}\) respectively. Arrange the following probabilities in decreasing order: A. The probability that P cannot solve the problem
B. The probability that Q cannot solve the problem
C. The probability that P, Q and R cannot solve the problem
D. The probability that the problem will be solved by at least one student Choose the correct answer:

A variate \(X\) has the probability distribution:

Arrange the following in increasing order:
A. \(E(X)\)
B. \(E(X^2)\)
C. \(E[(2X+1)^2]\)
D. \(\sigma^2\)

If the probability of a bad reaction from a certain injection is \(0.001\), then the chance that out of 2000 individuals more than two will get a bad reaction is given by:

A can hit a target 3 times in 5 shots, B 2 times in 5 shots, and C three times in 4 shots. All of them fire one shot each simultaneously at the target. What is the probability that at least two shots hit?

Using Poisson distribution, the probability that the ace of spades will be drawn from the pack of well-shuffled cards at least once in 104 consecutive trials is

A population grows at the rate of 8% per year. How long does it take for the population to double?

A company requires 16,000 units of raw material costing Rs 2 per unit. The cost of placing an order is Rs 100 and the carrying costs are 10% per year per unit of the average inventory. The Economic Order Quantity (EOQ) is:

Simplex method is used for:

PERT technique deals with the project of

The unoccupied cells in the transportation table are analogous to

A variable which does not appear in the basic variable column of a simplex table for a solution is assigned