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Multiple Sampling Plans - Quality Engineering - Exam, Exams of Quality Management

Jaypee University of Engineering & TechnologyQuality Management

The Major points in this exam paper are: Multiple Sampling Plans, Process Limits, Specification Limits, Impression Tool, Injection Moulding, Range Chart Data, Employee Participation Methods, Quality Assurance, Management Systems, Systems Audit

Typology: Exams

2012/2013

Uploaded on 04/10/2013

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shankar-maha009 🇮🇳

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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2010/11
School: Mechanical & Process Engineering
Programme Title: Bachelor of Engineering (Hons) in Biomedical Engineering
Bachelor of Science (Hons) in Process Plant Technology
Bachelor of Science (Hons) in Advanced Manufacturing
Technology
Programme Code: EBIOM_8_Y3, EPPTE_8_Y4, EAMTE_8_Y4,
Module Title: Quality Engineering
Module Code: MANU8007
External Examiner(s): Mr. Ger Reilly, Mr. Pat Ryan
Internal Examiner(s): Sally Bryan
Instructions: Answer THREE questions
Duration: 2 Hours
Sitting: Winter 2010
Requirements for this examination: None
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you are
attempting the correct examination.
If in doubt please contact an Invigilator.
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CORK INSTITUTE OF TECHNOLOGY

INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ

Semester 1 Examinations 2010/

School: Mechanical & Process Engineering

Programme Title: Bachelor of Engineering (Hons) in Biomedical Engineering Bachelor of Science (Hons) in Process Plant Technology Bachelor of Science (Hons) in Advanced Manufacturing Technology

Programme Code: EBIOM_8_Y3, EPPTE_8_Y4, EAMTE_8_Y4,

Module Title: Quality Engineering

Module Code: MANU

External Examiner(s): Mr. Ger Reilly, Mr. Pat Ryan Internal Examiner(s): Sally Bryan

Instructions: Answer THREE questions

Duration: 2 Hours

Sitting: Winter 2010

Requirements for this examination: None

Note to Candidates: Please check the Programme Title and the Module Title to ensure that you are attempting the correct examination. If in doubt please contact an Invigilator.

Q. 1

a) Differentiate between process limits and specification limits. (6 marks) b) Parts are made by injection moulding using a three impression tool, i.e. three products are made from one shot of the tool. Table Q1.1 shows the weight of the parts from the first 10 samples after setup. The specification is 250g 10g i. Calculate the limits for a Mean and Range chart from the data table Q1. (8 marks) ii. Calculate the Cp and Cpk values for the machine using information obtained in part (i) (8 marks) iii. Table Q1.2 gives the samples from the process at some later stage. Plot the values on a mean and range control chart with the limits from part (i). and comment on the results. ( 10 marks) Table Q1. Sample 1 2 3 4 5 6 7 8 9 10 Cavity A 250 251 252 251 250 250 251 248 251 249 B^249 248 250 250 247 246 250 247 250 C 252 253 251 250 252 251 254 250 254 250 Average 250.3 250.7 251.0 250.3 249.7 249.0 251.7 248.3 251.7 249. Table Q1. Sample 1 2 3 4 5 6 7 Cavity A 251 249 251 252 249 252 250 B 249 246 245 240 241 242 240 C 252 252 252 250 252 251 254 Average 250.7^ 249.0^ 249.3^ 247.3^ 247.3^ 248.3^248 Table Q1.3 - Mean & Range Chart Data n A 2 D 4 D 2 2 1.880 3.268 0 3 1.023 2.574 0 4 0.729 2.282 0 5 0.577 2.114 0 6 0.483 2.004 0

Q. 4

a) Project definition is the first step in a six sigma project. Explain why project definition is so important and discuss how the project charter document makes the project definition more precise. (10 marks) b) State and briefly explain the steps in the 5S methodogy (15 marks) c) Expalin how Poka Yoke can be used in a Six Sigma project. (8 marks)