Question Paper: Industrial Engineering : Question Paper May 2016 - Mechanical Engineering (Semester 6) | Gujarat Technological University (GTU)
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## Industrial Engineering - May 2016

### Mechanical Engineering (Semester 6)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.
1 (a) Discuss the various factors that affects the plant location.(7 marks) 1 (b) Differentiate between product layout and process layout by taking suitable example.(7 marks) 2 (a) What is PPC? Explain the function of PPC in brief.(7 marks)

### Solve any one question from Q2(b) & Q2(c)

2 (b) The sales of a product during the last four years were 860,880,870,890 units. The forecast for the fourth year was 876 units. If the forecast for the fifth year using exponential smoothing is equal to the forecast using a 3 period moving average. Find the value of smoothing constant (α).(7 marks) 2 (c) The following data gives the sales of the company for various years. By the method of least square find the trend values for each of the year. Forecast the sales for the year 1998 and 1999.

 Year Sale ('000) 1989 13 1990 20 1991 20 1992 28 1993 30 1994 32 1995 33 1996 38 1997 43
(7 marks)

### Solve any two question from Q3(a), Q3(b), Q3(c) & Q3(d), Q3(e), Q3(f)

3 (a) What is line of balance? Discuss in detail.(7 marks) 3 (b) A work sampling study was conducted to establish the standard time for an operation. The observations of the study is given below:
Total number of observations = 160
Manual (hand controlled work) = 14
Machine controlled work = 106
Machine idle time = 40
Average performance rating = 80%
No. of parts produced = 36
Allowance for personal needs and fatigue = 10%
Study conducted for 3 days
Available working hours per day = 8 hrs
Calculate the standard time per piece.
(7 marks)
3 (c) What is Productivity? Discuss the following:
(i) Ineffective time within the control of the worker.
(ii) Ineffective time due to shortcomings on the part of management.
(7 marks)
3 (d) A time study was conducted on a job consisting of three elements. Stop watch readings in hundredth of a minute are given. Calculate the standard time if allowance is 12%.

 Elements Stop watch readings Rating 1 2 3 4 5 A 10 73 139 203 266 80 B 25 88 155 218 288 100 C 64 128 193 257 320 110
(7 marks)

### Solve any two question from Q4(a), Q4(b) & Q4(c), Q4(d)

4 (a) Explain in brief various charts and diagrams utilized in method study.(7 marks) 4 (b) Define wages and explain in detail various types of incentives plans.(7 marks) 4 (c) What is industrial legislation? Name the different acts which are helpful in resolving the industrial disputes. Discuss any one act in detail.(7 marks) 4 (d) What is an OC curve? Explain the step-by-step procedure for the construction of an OC curve.(7 marks)

### Solve any two question from Q5(a), Q5(b) & Q5(c), Q5(d)

5 (a) (i) Write Short note on: Six Sigma(4 marks) 5 (a) (ii) Write Short note on: T.Q.M.(4 marks) 5 (b) Following are the readings of diameters taken for pins manufactured on the lathe machine. Draw X-bar and R chart for the given data and state whether the process is in control. (Given: A2=.577, D3=0, D4=2.114).

 Sample 1 2 3 4 5 1 5.02 5.01 4.94 4.99 4.96 2 5.01 5.03 5.07 4.95 4.96 3 4.99 5 4.93 4.92 4.99 4 5.03 4.91 5.01 4.98 4.89 5 4.95 4.92 5.03 5.05 5.01 6 4.97 5.06 5.06 4.96 5.03 7 5.05 5.01 5.1 4.96 4.99 8 5.09 5.1 5 4.99 5.08 9 5.14 5.1 4.99 5.08 5.09 10 5.01 4.98 5.08 5.07 4.99
(7 marks) 5 (c) In a manufacturing process, the no of defectives found in the inspection of 15 lots of 400 items each are given below:
Draw the Suitable control chart and state whether the process is in control. Determine the revised control limits.
 Sample No. No. of Defectives Sample No. No. of Defectives 1 2 9 18 2 5 10 8 3 0 11 6 4 14 12 0 5 3 13 3 6 0 14 0 7 1 15 6 8 0
(7 marks)
5 (d) State various sources of industrial finance and government incentives to entrepreneurs.(7 marks)