Industrial Engineering - Mechanical Engineering MCQ

Common data for 4 & 5
Jobs are to be scheduled through one machine and details are given below:-

Q. If first come, Fist Served (FCFS) rule is used to sequence the job, the number of jobs delayed is___

(Important - Enter only the numerical value in the answer)

Common data for 4 & 5
Jobs are to be scheduled through one machine and details are given below:-

Q. Using Shortest Processing Time (SPT) rule, total tardiness will be

Breakdown occurs at average of 2 per hour in a machine in production shop. Cost of repairman is Rs.50/-
per hour and repair rate is 3 per hour. The average time that machine is waiting for the repairman will be:-

Consider the seven jobs, each of which has to go through the machines A and B in the order AB Processing time in hours are given in table below:-

Processing sequence that would minimise time span and the minimum elapsed time respectively are: -

In (Q-7) Idle time for machine B is:-

Earliest completion time of the given project is _____days.

(Important - Enter only the numerical value in the answer)

In LPP with two variable, if m is the number of constraints and nonnegativity constraints x > 0, y > 0,
the feasible region in the graphical solution will be surrounded by how many lines?

An investor is interested to invest in shares that has a growth of at least Rs.600/- initially with a dividend
of at least Rs.500/- per annum. He choose two shares S₁ and S₂. As per market study, share S₁ will earn
dividend of 7% per annum and share S₂ will earn 15% per annum. 

Prediction is that growth in market value in first year share S₁ will be 25 paise per rupee invested and in
case of share S₂, 30 paise per rupee invested LPP is (x₁ amount is invested in S₁ and x₂ in S₂) :-

In a transportation problem, a solution is a basic feasible solution if after allocations

Four persons are to be assigned four tasks. Assignment problem is shown below. Optimum solution of problem is:-

(Table depicts the time taken by person to complete the task)

Project duration in CPM can be reduced by crashing:-

Consider the network shown below. Critical path is along :-

At a self service store, cashier can serve 10 customers in 5 minutes as per exponential distribution. On an
average 15 customers arrive every 10 minutes as per Poission distribution. Probability that the cashier would be idle is_____.

(Important - Enter only the numerical value in the answer)

In a network, dummy activities are used to:-

In a network, the optimistic, most likely and pessimistic times (in weeks) are shown for each activity.
Variance of completion time for this network will be:-

For the transportation problem shown below the optimum solution using VAM will be:-

Consider assignment problem as given below:-

For optimum assignment, associated minimum cost will be:-

Company purchases an item at the rate of Rs2.5/- per piece from manufacturer. 25 units of item are required per year. Every time an order is placed, a fixed cost of Rs.4/ - is incurred.

Other charges are as: storage 1% per year, interest rate 12% per year and obsolescence rate 7% per year.

Total optimal variable cost is Rs___

(Important - Enter only the numerical value in the answer)

Firm requires 100 units per day of an item. It costs Rs.100/- to initiate order for purchasing. Item kept in storage is estimated to cost about Rs 0.02 per day. Lead time b/w placing and receiving order is 12 days.

What will be optimum inventory policy for ordering the part?

For a product, production rate is 50 items per day and demand rate is 25 items per day.

Set up cost is Rs.100/- per set-up and holding cost is Rs 0.01/- per unit per day. If shortages are not permitted, minimum total cost for one run will be:-

Sales of cycle in a shop in three consecutive months are given as 120, 100, 130. Exponential smoothening average method with  smoothening factor of 0.2 is used in forecasting. Expected no. of sales in next month is:-

For a product, demand is 1600 units per year, cost of placing an order is Rs.5/- and cost of storage is 10% per year. Price breaks for the product are as follows:-