Metrology and Quality Control - Jun 2015
Mechanical Engineering (Semester 5)
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.
Answer any one question from Q1 and Q2
1 (a) Explain principle's of Engineering metrology in details.(6 marks) 1 (b) Write a note on laser interferometer.(4 marks) 2 (a) Explain different methods of measuring flatness.(6 marks) 2 (b) Differentiate between primary texture and secondary texture.(4 marks)
Answer any one question from Q3 and Q4
3 (a) Define Taylor's principle.(2 marks) 3 (b) Write a note on floating carriage micrometer.(4 marks) 3 (c) Explain universal measuring machine.(4 marks) 4 (a) Explain principle of interferometry.(2 marks) 4 (b) Write a note on span gauging.(4 marks) 4 (c) Explain Automatic inspection system.(4 marks)
Answer any one question from Q5 and Q6
5 (a) Explain Deming's fourteen points in details.(8 marks) 5 (b) Explain seven New Quality tools.(8 marks) 6 (a) Define cost of prevention, cost of appraisal, cost of internal failure & cost of external failure.(8 marks) 6 (b) Explain seven quality control tools.(8 marks)
Answer any one question from Q7 and Q8
7 (a) Explain in detail OC curve and show following element on OC curve.
iv) LTPD(6 marks) 7 (b) Two machines producing components are checked up for the statistical stability. Draw the 'P' chart for both machines and comment upon the processes. Sample size for both machines are 200.
|Batch 1||Batch 2||Batch 3||Batch 4||Batch 4|
i) Determine the process capability.
ii) Determine the three-sigma limits for the x chart.
iii) Draw the control chart and give your assessment. Assume the normal distribution and d2 for group size 5 is 2.326.(10 marks)
Write short notes on following (Any Three):
9 (a) TPM(6 marks) 9 (b) Six sigma(6 marks) 9 (c) Kanban(6 marks) 9 (d) QFD(6 marks) 9 (e) JIT(6 marks) 9 (f) Poka-yoke.(2 marks)