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- Statistical Quality Control - SQC
- 2018
- PYQ
**Biju Patnaik University of Technology BPUT - BPUT**- Mechanical Engineering
- B.Tech
**3241 Views**- 45 Offline Downloads
- Uploaded 11 months ago

Registration No : Total Number of Pages : 02 4th Semester Regular / Back Examination 2017-18 STATISTICAL QUALITY CONTROL BRANCH : MECH Time : 3 Hours Max Marks : 100 Q.CODE : C1161 Answer Part-A which is compulsory and any four from Part-B. The figures in the right hand margin indicate marks. Answer all parts of a question at a place. Q1 a) b) c) d) e) f) g) h) i) j) Q2 a) b) c) d) e) f) Part – A (Answer all the questions) Answer the following questions: multiple type or dash fill up type: Which control chart is used for variables? (a) p-chart (b) np- chart (c) c –chart (d) x̅ chart AOQL stands for __________? Process control is carried out (a) before production (b) during production (c) after production control (d) All of the above Which one is used to evaluate number of nonconformities? (a) p chart (b) c chart (c) np chart (d) none The mean of sampling distribution is (a) less than mean of process distribution (b) more than mean of process distribution (c) equal to mean of process distribution (d) all of the above Poky means____ and yoke means_______? Kaizen word originates from ___________ country. The distribution of measured data can be studied by using (a) X̅ chart (b) R chart (c) both X̅ and R chart (d) None of the above Formula for process capability is _________? QFD is the process of transforming _______ in to _______? Answer the following questions: Short answer type: What is the difference between single sampling plan and double sampling plan? What is online and off line quality control? What is natural tolerance limits in quality control? Differentiate between full factorial and fractional factorial? What are important components of TQM? Why the concept of zero defect is necessary? B.Tech. PME4D001 (2 x 10) (2 x 10)

g) h) i) j) Q3 a) b) Q4 a) b) What are the purposes of control charts? What is average total inspection? What are quality characteristics? What is the importance of ISO 14000 Part – B (Answer any four questions) What is variation? What are the causes of variations? Describe all types of variations in quality control. What is process capability? Why it is necessary? (10) (5) A sub group of 5 items each are taken from a manufacturing process at a regular interval. After 25 subgroups, It I found that x̅= 357.5 and R = 8.80. find : (i) upper and lower control limits for X̅ and R chart (ii) process capability (iii) If specification limits are 14.40±0.40, what conclusion you can be drawn and provide suggestion? What is sampling plan? Why sequential sampling is necessary? (10) (5) Q5 a) b) Explain O.C. Curve in details? What is its purpose in sampling plan? A sampling plan is given as N = 10,000, n = 100 and c = 2. (i) Compute the probability of acceptance of lots with 1% defective? (ii) Determine AOQ value. (10) (5) Q6 a) What is taguchi quadratic loss function? Explain in details what is its significance? What are importance of parameter selection design? (10) What is signal and noise? Why S/N Ratio is necessary? What are types of S/N Ratio? What are inner and outer array. Explain with an example. (10) (10) b) What is total quality management? How TQM is implemented in an organization? Describe PDCA cycle? a) b) How quality circle is implemented and training is provided in an organization? What is quality assurance system? Explain ISO 9000? (10) (5) b) Q7 a) b) Q8 Q9 a) (5) (5) (5)

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