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Posted Date: 14 Aug 2009 Posted By: Sree.... Member Level: Platinum
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2008 Andhra Pradesh State Jawaharlal Nehru Technological University Code No: RR411805 IV B.Tech I Semester Supplimentary Examinations, November 2008 NDT METHODS [ Set No. 1] Question paper
Code No: RR411805 Set No. 1
IV B.Tech I Semester Supplimentary Examinations, November 2008
NDT METHODS
(Metallurgy & Material Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. What is NDT? Discuss about the development of NDT and its important aims.[16]
2. (a) What are the physical and chemical characteristics of penetrants used for flaw
detection?
(b) Explain in detail the steps to be followed to apply penetrant flaw detection
method? [6+10]
3. (a) Explain in detail about the safety measures to be taken from radiation.
(b) What are the limitations of Radiographical method? [12+4]
4. What are calibration blocks and explain in detail the uses of calibration blocks?
[16]
5. Explain in detail the usage of field sensitive probes to detect magnetic flux leakage?
[16]
6. (a) In what way eddy current inspection and magnetic inspection differs from each
other.
(b) Discuss about the use of inspection coils in eddy current inspection system.
[4+12]
7. (a) Explain the principles of Hysteresis loop tests in electromagnetic testing method
(b) What are the applications of hysteresis loop tests? [12+4]
8. (a) What is mechanical impedance?
(b) Define Acoustic impedance?
(c) Explain how it is used in testing adhesive bonding between two surfaces.
[4+4+8]
1 of 1
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