Industrial Engi...

It is desired to optimize the number of perishable items in any month in the store by a stockist. For this perishable item, we have the following demand distribution:

For each item, the stockist pays Rs 50 & he sells each item at Rs. 100. If any stock is left unsold any month, it is sold at Rs. 20 each & no penalty occurs for unfulfilled demand. To maximize his profit, his optimal stock level will be_________

In a forecasting model using the exponential smoothening method, the actual and forecasted demand for February is 450 and 470. The forecast for March is 455. The value of the exponential smoothening factor is________

Consider the data given in the table below

Using the weighted moving average method for 4 periods, which of the following statements are true?

4 jobs have to be performs on 2 machines M₁and M₂ before completion processing time (min) for various activities is given below.

The sum of idle time of M₁ and M₂ is __ (min).

A machine is used for turning operation and it takes 30 minutes to machine the component. Efficiency of the machine is 80% and scrap is 25%. The desired output is 1200 pieces per week. Considering 40 hours per week and 50 week in a year. The number of machines required in a year is ______. 

In an assembly line for assembling the engine, six workers are assigned tasks that take 22, 24, 26, 27, 25 and 26 minutes respectively. The balance delay for the line is:

The most fundamental attribute of TQM is

Which one of the following is true in case of simplex method of linear programming?

The arrival rate of customers at a banking counter follows Poisson distribution with a mean of 24 per hour. The service rate of the counter clerk is 32 per hour. The probability in percentage, of 5 customer in the queue is ________.

A stockist has to supply 300 units of a commodity every Tuesday to his customer. He gets the product at Rs. 50 per unit from the manufacturer and incurs a cost of Rs. 80 per order including the ordering and transportation costs. The carrying cost is 8% per year of the cost of the product. If he sells the item at Rs. 60 per unit, his weekly profit in Rs is:

AP computer services assembles customized personal computers from generic parts. Arpit & Praveen purchase generic computer parts in volume at a discount from a variety of Sources whenever they see a good deal. Thus, they need a good forecast of demand. The company has accumulated the demand data shown in table below; for four months: -

Calculate the Forecasted demand for May, using exponential smoothing forecast method by taking smoothing constant α = 0.32.

Actual & forecasted demands of a product are as follows

The forecast error measured in terms of mean absolute deviation (MAD) & mean absolute percentage error (MAPE), respectively are: 

In a firm, the director of operations wanted a newly joined employee to review the scheduling method they are using. The data of the job name, processing time and due dates are mentioned below. If the company is using Early due date policy,

A machine operator has to perform three operations, namely plane turning, step turning, & taper turning on a number of different jobs. The time required to perform these operations in minute for each operating for each job given in the matrix given below find the optimal sequence, which minimizes the time required.

A company manufactures two types of cars A and B and their selling prices are 2 lakhs and 4 lakhs respectively. The manufacturing cost of each car is 1 lakh for A and 3 lakhs for B and the company has 96 lakhs allotted to manufacturing. The material requirement is 2 kg for A and 5 kg for B and the company has 100 kg material in storage.

In a loco shed, locomotives arrive at a rate of 30 locomotives per days. Assuming that inter-arrival time follows an exponential distribution and service time distribution is also exponential with an average of 36 minutes. If the input of Locomotives increases to an average of 35 per day then the change in the average system size is 

In a small engineering project, for an activity, the optimistic time is 2 minutes, the most likely time is 5 minutes and the pessimistic time is 8 minutes. What is the expected time of the activity?