Roll No.
Total No. of Pages : 02
Total No. of Questions: 18
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B.Tech. (ME) (2012 Onwards E-II) (Sem.-7)
NON-DESTRUCTIVE TESTING
Subject Code: DE/ME-2.4
M.Code: 72010
Time: 3 Hrs.
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Max. Marks: 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
Write short notes on following :
- Differentiate between destructive and non-destructive testing.
- Give salient features of Acoustic Emission Technique.
- Name two of the NDT techniques that can be used to detect internal defects.
- Explain the principle of Eddy current testing & its applications.
- Which materials are subjected to magnetic particle testing?
- State safety precaution in Industrial radiography.
- What is concrete test hammer?
- Which NDT method is used for measuring thickness of materials?
- Differentiate between ordinary penetrant testing and fluorescent penetrant testing.
- Explain the term subject contrast and IQI in radiographic testing.
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SECTION-B
- State how different NDT techniques are selected for defect detection.
- Explain principle of radiographic testing and give its applications and limitations.
- Explain various methods of magnetization & demagnetization commonly practiced in Non-destructive testing procedure.
- Explain the principle of Ultrasonic Testing. Give its applications, advantages and limitations.
- Give a list of leak testing methods highlighting their principle and applications.
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SECTION-C
- a) Explain the nondestructive method by which moisture distribution in wood can be predicted.
- b) State dye penetrant test principle and explain capillary action, contact angle, adhesive force and cohesive force. Mention limitations of dye penetrant test.
- a) Discuss the defect detection methods for ferrous and nonferrous materials.
- b) What is photoelastic material? Explain the phenomena of stress analysis using photoelasticity giving a neat sketch.
- a) Describe sonic material analyzer, its working, applications using an appropriate sketch.
- b) Explain with suitable sketch: Circular Magnetization, and Longitudinal Magnetization.
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NOTE: Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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