Download AKTU B-Tech 8th Sem 2018-19 NME 065 Non Destructive Testing Question Paper

Firstranker's choice

Printed Pages: 02

Paper Id: 140255

--- Content provided by FirstRanker.com ---

Sub Code: NME 065

Roll No.

B TECH

(SEM-VIII) THEORY EXAMINATION 2018-19

NON DESTRUCTIVE TESTING

--- Content provided by⁠ FirstRanker.com ---

Time: 3 Hours

Total Marks: 100

Note: 1. Attempt all Sections. If require any missing data; then choose suitably.

SECTION A

2 x 10 = 20

--- Content provided by FirstRanker.com ---

1. Attempt all questions in brief.

   1. Enlist any five devices used for visual inspection test.

   2. Define contrast ratio and contrast sensitivity.

   --- Content provided by⁠ FirstRanker.com ---

   3. What is dwell time?

   4. What is skin effect?

   5. What do you mean by nature of radiation?

      --- Content provided by‌ FirstRanker.com ---

   6. Define Bragg's Law.

   7. What is Attenuation?

   --- Content provided by⁠ FirstRanker.com ---

   8. Define Snell's law.

   9. Which type of probe is used to inspect the inside diameter of a bore?

   10. Define Lenz's Law.

       --- Content provided by⁠ FirstRanker.com ---

SECTION B

2. Attempt any three of the following:

   1. What are defects? Discuss any three casting, welding and forging defects which can only be detected by the NDT methods.

      --- Content provided by FirstRanker.com ---

   2. What are the properties the penetrants must have in order to work well? Classify Different types of penetrants.

   3. Calculate the Bragg's angle, if X-ray of wavelength 1.542 Å deflected from (121) plane and interatomic spacing 2.43 Å. first order reflection.

   --- Content provided by‍ FirstRanker.com ---

   4. With neat sketch explain the method of ultrasonic testing and write its applications, advantages and disadvantages.

SECTION C

3. Attempt any one part

   --- Content provided by⁠ FirstRanker.com ---

   10x1=10

   1. Discuss about machine vision technology used in visual inspection method. Differentiate between Manual and Automated inspection method.

   2. Write short notes on the following:

      1. Oil Whitening Test

         --- Content provided by‌ FirstRanker.com ---

      2. Hammer Test

--- Content provided by‍ FirstRanker.com ---

4. Attempt any one part of the following:

   10x1=10

   1. Discuss the inspection of tubes of a heat exchanger and Fatigue crack inspection by Eddy current testing.

   2. What are various methods of magnetization of a ferromagnetic material? Discuss any two of them with neat diagram. What are the standards applicable to liquid penetrant testing? Write short notes on Leak test and Zyglo penetrant test.

      --- Content provided by⁠ FirstRanker.com ---

5. Attempt any one part of the following:

   10x1=10

   1. Describe in detail about Rayleigh's scattering and Compton's scattering with neat diagram.

      --- Content provided by FirstRanker.com ---

   2. Write short notes on the following.

      1. Cooling of anode

      2. Focal Spot and Spot Size

         --- Content provided by FirstRanker.com ---

      3. Tube Voltage and tube current.

--- Content provided by FirstRanker.com ---

6. Attempt any one part of the following:

   10x1=10

   1. Define Ultrasonic testing. How this testing can help in medical diagnosis and inspecting welded joint.

   2. Discuss in detail about ultra sonography of human body. Mention advantages and disadvantages of ultrasonic testing with some applications.

      --- Content provided by‌ FirstRanker.com ---

7. Attempt any one part of the following:

   10x1=10

   1. What are the factors which effect eddy current testing? Discuss the eddy current flow characteristics with neat diagram.

      --- Content provided by​ FirstRanker.com ---

   2. Discuss the different types of Probe used in eddy current testing with neat diagram.

--- Content provided by‍ FirstRanker.com ---