B.TECH - Semester 8 industrial quality control Question Paper 2013 (apr)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Define the terms Quality and Quality assurance.
- What is the speciality of C-chart?
- What are the uses of Control charts?
- What do you mean by Producer's risk?
- Differentiate between AQL and LTPD in sampling.
- Define the term Reliability.
- What is a mixed configuration in system reliability?
- Define the term Maintainability.
- What are functional experiments?
- What is an orthogonal array? ( $10 \times 2=20$ Marks) P.T.O. Answer one full question from each module. Each question carries 20 marks.
- (a) What are the various causes of shift in process? Explain.
- (b) Define the term Process capability and explain the methods of calculating 10 process capability.
- (a) What are the uses of control Charts? How they are classified?
- (b) A high voltage output of a certain power supply unit for copy machines is specified as $350 \pm 5 \mathrm{~V}$ DC. Subgroups of 4 units are drawn approximately every hour and tested. After 30 subgroups $\sum \bar{x}=10560$ and $\sum R=86.5$. Dete...
- (a) Differentiate between single sampling and Double sampling plan with the help of diagrams.
- (b) What is AT1? How will you compute the ATl for single sampling and double sampling plans?
- (a) What are the objectives of Acceptance sampling plan? List some of the issues encountered in this for producers and consumers.
- (b) It is desired to have a system of single sampling plans, all of which have a sample size of 60 . Find the respective values of $n p_{0.99}, n p_{0.50}$ and $n p_{0.01}$ for a system of plans having acceptance numbers of $0,1,2,3$. Sketch the OC c...
- (a) What is the objective of Life Testing? Explain with suitable diagrams. 10
- (b) Discuss the methods adopted for improving the reliability of complex systems with the help of block diagrams.
- (a) Explain the states involved in the new product design.
- (b) An element has a probability of successful operation over given period of $60 \%$. If four such elements are connected in parallel, estimate the possible improvement factor.
- Explain the steps involved in Taguchi methodology with suitbale example of your choice.
- Write explanatory notes on : (a) Design of Experiments
- Write explanatory notes on : (b) $\mathrm{S} / \mathrm{N}$ ratio and performance measure.