Register Number: 7737

Total No. of Pages: 2

Name of the Candidate:

diploma EXAMINATION – 2012

(QUALITY MANAGEMENT)

(PAPER-iV)

140. QUALITY ASSURANCE

December) Maximum: 100 Marks (Time: 3 Hours

Answer ALL Questions (5×20=100)

All questions carry equal marks

UNIT-I

1. / a) List the merits and demerits of Acceptance sampling over 100 % Inspection. (10)
b) Differentiate between AQL and AOQL. (10)
(or)
2. / a) Explain the OC Curves with suitable examples. (10)
b) Compare Random Sampling and Stratified sampling. (10)
UNIT-II
3. / Write short notes on the following
a) Single sampling plan (5)
b) Double sampling plan (5)
c) Multiple Sampling plan (5)
d) Sequential Sampling plan (5)
(or)
4. / a) State the advantages and limitations of Switching Rules. (10)
b) Explain in detail about Tightened and Reduced inspection. (10)
UNIT-III
5. / a) How does the Acceptance sampling by variables differ from that by attributes? (10)
b) Differentiate between Single and Double specification limit. (10)
(or)
6. / a) A known – Sigma variables plan for One-sided specification uses n=4 and k’=1.68. Compute the probability of acceptance of 5 % defective lot assuming that the frequency distribution in the lot in normal and O’ is estimated correctly. (20)
UNIT-IV
7. / a) Explain how to accept or reject a lot using unknown – sigma variables. (10)
b) Explain different types of acceptance criteria involving variables. (10)
(or)
8. / a) Explain the conditions for instituting Normal inspection. (10)
b) Explain how variable standard is divided. (10)
UNIT-V
9. / Write short notes on the following:
a) Quality and reliability (5)
b) Failure pattern for complex products (5)
c) Cost of reliability (5)
d) Maintenance and reliability (5)
(or)
10. / a) Compare and contrast the system reliability with components. (10)
b) List the importance of reliability. (10)

------