Metallurgical Testing and Inspection MCQ Questions and Answers

Metallurgical Testing and Inspection MCQ Questions and Answers | Metallurgical Engineering

Enhance your knowledge of Metallurgical Testing and Inspection with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Metallurgical Testing and Inspection are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-1 section-2

The NDT technique used to detect deep lying defects in a large sized casting is

A) liquid penetrant inspection B) magnetic particle inspection C) ultrasonic inspection D) eddy current inspection

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Answer & Solution

Answer: Option C

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Match the technique for proper distinction between the two :

P. Soft and hard magnets	1. Optical microscopy
Q. Amorphous and crystalline materials	2. Hall effect measurement
R. n and p-type semi-conductors	3. X-ray diffraction
S. Cast and wrought alloys	4. Magnetic hysteresis

A) P-4, Q-3, R-1, S-2 B) P-1, Q-3, R-4, S-2 C) P-4, Q-3, R-2, S-1 D) P-2, Q-1, R-3, S-4

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Answer: Option C

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Which is the process by which screw dislocation may not leave slip plane?

A) Glide B) glissile C) climb D) cross-slip

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Answer: Option C

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The crack which propagates through the grain is

A) Intergranular fracture B) Trans granular fracture C) Both A and B D) None of these

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Answer: Option B

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Match the defects given in Group I with the suitable non-destructive evaluation technique from Group II.

Group I	Group II
P. Crack in a flat aluminium slab	1. Radiography
Q. Sub-surface porosity in a bronze casting	2. Eddy current technique
R. Surface cracks in a steel tool	3. Ultrasonic technique
S. Internal porosity in a ceramic block	4. Magnetic particle technique

A) P-3, Q-4, R-1, S-2 B) P-2, Q-4, R-1, S-3 C) P-4, Q-2, R-1, S-3 D) P-3, Q-2, R-4, S-1

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Answer: Option D

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A wire is stretched 3 mm by a force of 150 N. Assuming the elastic limit is not exceeded, ther stretch for 450N is:

A) 1mm B) 2mm C) 9mm D) 12mm

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Answer & Solution

Answer: Option C

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Demagnetization, ASTM E709-95 recommends a coil of ampere-turns:

A) 1000 to 3000 B) 3000 to 5000 C) 5000 to 10000 D) 10000 to 15000

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Answer & Solution

Answer: Option C

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Why might steel parts have a greater tendency towards rusting after penetrant testing?

A) Penetrant materials are normally corrosive B) Penetrant materials residues are hydroscopic C) Any protective oils are removed during penetrant testing D) This is true only if the developer and penetrant residues are not removed after testing

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Answer: Option C

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In the X-ray radiography technique the tube voltage for thicker plates as compound to the thin plates, should be

A) higher as it gives higher wavelength B) lower as it gives higher wavelength C) higher as it gives shorter wavelength D) lower as it gives shorter wavelength

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Answer & Solution

Answer: Option C

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