Gujarat Technological UniversitySummer 2026 examination

GTU 3161923 Non destructive Testing Summer 2026 Question Paper & PDF

B.E. · Mechanical Engineering · Semester 6 · Subject code 3161923
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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Q.1

14 Marks
(a)
3 marks

What is Non-destructive testing? Enlist different type of Non-destructive testing techniques.

(b)
4 marks
State the use of Borescope in visual testing.
(c)
7 marks

Explain with neat sketch the principle of Liquid penetrant testing. Also state the different steps of LPT. different steps of LPT.

Q.2

14 Marks
(a)
3 marks
Give difference between Destructive and Non-destructive testing.
(b)
4 marks
Enlist advantages and disadvantages of X-ray radiography.
(c)
7 marks
Explain Ultrasonic testing with its advantages and limitations.
(c)
7 marks

What is sensitivity in NDT? Discuss briefly about selection of different NDT techniques for detection of defects.

Q.3

14 Marks
(a)
3 marks
Discuss different type of sound waves in Ultrasonic testing.
(b)
4 marks
What is Magnetism? Explain principle of MPT.
(c)
7 marks
Write short note on magnetizing technique.
(a)
3 marks
Discuss applications and limitations of MPT.
(b)
4 marks
Explain principle of Acoustic Emission testing (AET).
(c)
7 marks
Write short note on procedure of testing component using MPT.

Q.4

14 Marks
(a)
3 marks
Explain X-ray film processing.
(b)
4 marks
Give difference between Ultrasonic and Radiography testing.
(c)
7 marks
Explain Ultrasonic testing A- scan, B-scan and C-scan.
(a)
3 marks

What are the safety precautions takes while performing industrial Radiography?

(b)
4 marks
Explain the principle of radiographic examination with neat sketch.
(c)
7 marks

With neat sketch write short note on X-ray generation in radiography testing.

Q.5

14 Marks
(a)
3 marks
What is leak? Explain types of it.
(b)
4 marks
Discuss the applications and limitations of leak and pressure testing.
(c)
7 marks
Write a short note on Eddy current testing.
(a)
3 marks
Discuss Eddy current testing principle.
(b)
4 marks
What do you understand by sensitivity in Eddy current testing?
(c)
7 marks
Write short note on different methods of Leak testing.

Other Semester 6 subjects

BE Mechanical

2161902
Internal Combustion Engines
3161903
Computer Aided Design
3161907
Basics of Industrial Engineering
3161910
Applied Thermodynamics

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About this paper

Official Gujarat Technological University (GTU) examination paper for Non destructive Testing (Summer 2026, B.E. · Mechanical Engineering, Sem 6). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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