Mechanical Engineering
GATE ME topic:production-planning-control PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–17 of 17. Imported answers require independent review unless marked reviewed.
Question 33
Open questionMEMCQ2 marksNeeds review
For an assembly line, the production rate was 4 pieces per hour and the average processing time was 60 minutes. The WIP inventory was calculated. Now, the production rate is kept the same, and the average processing time is brought down by 30 percent. As a result of this change in the processing time, the WIP inventory
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Open questionMEMCQ2 marksNeeds review
The forecast for the monthly demand of a product is given in the table below.
Month | Forecast | Actual Sales |
|---|---|---|
1 | 32.00 | 30.00 |
2 | 31.80 | 32.00 |
3 | 31.82 | 30.00 |
The forecast is made by using the exponential smoothing method. The exponential smoothing coefficient used in forecasting the demand is
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Open questionMEMCQ1 markNeeds review
The table presents the demand of a product. By simple three-months moving average method, the demand-forecast of the product for the month of September is
Month | Demand |
|---|---|
January | 450 |
February | 440 |
March | 460 |
April | 510 |
May | 520 |
June | 495 |
July | 475 |
August | 560 |
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 16
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The time series forecasting method that gives equal weight to each of the m most recent observations is
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Open questionMENAT2 marksNeeds review
Processing times (including setup times) and due dates for six jobs waiting to be processed at a work centre are given in the table. The average tardiness (in days) using shortest processing time rule is ________ (correct to two decimal places).
Job | Processing time (days) | Due date (days) |
|---|---|---|
A | 3 | 8 |
B | 7 | 16 |
C | 4 | 4 |
D | 9 | 18 |
E | 5 | 17 |
F | 13 | 19 |
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Open questionME-1MCQ1 markNeeds review
Cylindrical pins of diameter
are being produced on a machine. Statistical quality control tests show a mean of
and standard deviation of
. The process capability index
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Open questionME-1NAT2 marksNeeds review
Following data refers to the jobs (P, Q, R, S) which have arrived at a machine for scheduling. The shortest possible average flow time is ________ days.
Job | Processing Time (days) |
|---|---|
P | 15 |
Q | 9 |
R | 22 |
S | 12 |
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