Download GTU BE/B.Tech 2018 Winter 7th Sem New 2172102 Non Destructive Testing Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. Compare Non Destructive testing with Destructive testing. (03)
2. Explain principle of visual testing and list visual aids. (04)

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3. State principle of liquid penetrant testing (LPT) and with neat sketch explain different steps of LPT. (07)

Q.2

1. Briefly give application and limitations of Visual Testing. (03)
2. Define leak and classify it briefly explaining it. (04)
3. Explain principle of leak testing and discuss Helium leak detection techniques with neat sketch. (07)

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OR

1. With neat sketch of V1 and V2 IIW standard block for Ultrasonic Testing explain its need. (07)

Q.3

1. In brief give applications and limitations of LPT. (03)
2. With example explain UT calibration steps on V1 or V2 block. (04)

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3. Explain magnetic particle testing (MPT) principle and give applications and limitations. (07)

OR

1. What is contact angle, capillary action and dwelling time in LPT. (03)
2. Briefly explain different MPT equipment. (04)
3. Explain different methods of magnetization for MPT. (07)

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Q.4

1. Explain principle of Ultrasonic testing. (03)
2. What are different types of sound waves? Explain. (04)
3. With neat sketch explain different types of ultrasonic probes. (07)

OR

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1. Explain principle of radiography. (03)
2. What is the use of penetrameter in RT. (04)
3. Explain near zone, far zone and transition zone in UT. (07)

Q.5

1. Define geometric unsharpness (Ug) and write note on radiographic film. (03)

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2. Draw neat sketch of X-ray generation in RT. (04)
3. Explain UT A-scan, B-scan and C-scan. (07)

OR

1. Briefly explain thermal methods for NDT. (03)
2. Write note on eddy current testing. (04)

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3. List UT methods and explain pulse echo method with neat sketch. (07)

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