This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Non-Destructive Testing”.
1. What is first step involved in the process of preparing test sample for microstructural examination?
a) Rough polishing
b) Fine grinding
c) Fine polishing
d) Etching
Answer: b
2. Which of the following compound is used for fine polishing?
a) Aluminum oxide
b) Nitric oxide
c) Silicon carbide
d) Iron oxide
Answer: a
3. Etching of specimen is done to achieve ___________
a) Visible grain boundary
b) Invisible grain boundary
c) Toughness
d) Hardness
Answer: a
4. What is the average grain diameter (in mm) for the grain size ASTM grain size 12?
a) .0066
b) .0078
c) .0021
d) .0056
Answer: d
5. Equipment used for inspection of inside portion of hollow chamber or narrow tube is known as ___________
a) Endoscope
b) Telescope
c) Borescope
d) Flexiscope
Answer: c
6. What is the value of average number of grains in per square inch for ASTM 11?
a) 2048
b) 1024
c) 6
d) 5
Answer: b
7. Which of the following property will be more in fine grained structure?
a) Ductility
b) Corrosion resistance
c) Creep resistance
d) Hardness
Answer: a
8. Which of the following property will be more in coarse grain structure?
a) Ductility
b) Corrosion resistance
c) Hardness
d) Toughness
Answer: a
9. Which of the following penetrating liquid is used in a liquid penetration test?
a) Water
b) Chlorine based solvent
c) Petroleum based carrier fluid
d) Fluorine based solvent
Answer: c
10. Which of the following non destructive testing is used to detect change in composition of any material?
a) Liquid penetration test
b) Ultrasonic test
c) Eddy current test
d) Radiography
Answer: d