Engineering :: Metallurgy
|
|
|
|
|
1. |
In Brinell hardness tester the load for aluminium is |
A. |
300 kg |
B. |
1500 kg |
C. |
1000 kg |
D. |
500 kg |
E. |
100 kg |
|
|
Answer: Option D
Explanation:
|
2. |
In Brinell hardness testing the timer for loading is |
A. |
1 second |
B. |
2 seconds |
C. |
5 seconds |
D. |
15 seconds |
E. |
1 minute |
|
|
Answer: Option D
Explanation:
|
3. |
In Brinell hardness testing the minimum thickness of the specimen should be |
A. |
Less than 5 times the depth of impression |
B. |
Less than 10 times the depth of impression |
C. |
Equal to 10 times the depth of impression |
D. |
More than 10 times the depth of impression |
E. |
Thickness of specimen has no relevance to the depth of impression |
|
|
Answer: Option D
Explanation:
|
4. |
Endentor used in Vickers hardness testing machine is |
A. |
25 mm dia ball |
B. |
15 mm dia ball |
C. |
10 mm dia ball |
D. |
Conical indentor with 120? apex angle |
E. |
Diamond square-based pyramid |
|
|
Answer: Option E
Explanation:
|
5. |
Angularity of the square base pyramid in Vickers hardness tester is |
Answer: Option D
Explanation:
|
6. |
The property which enables metals to be drawn into wire is known as |
A. |
Malleability |
B. |
Ductility |
C. |
Straining |
D. |
Plastic deformation |
E. |
Elastic deformation |
|
|
Answer: Option B
Explanation:
|
7. |
Slow plastic deformation of metals under a constant stress is known as |
A. |
Fatigue |
B. |
Proof deformation |
C. |
Gradual deformation |
D. |
Creep |
E. |
Endurance failure |
|
|
Answer: Option D
Explanation:
|
8. |
In which of the following cases creep is an important consideration? |
A. |
Cast iron water pipes |
B. |
Cycle chains |
C. |
Gas turbine blades |
D. |
Steam engine flywheel |
E. |
All of the above |
|
|
Answer: Option C
Explanation:
|
9. |
The rollers of a cycle chain are subjected to |
A. |
Compressive stress |
B. |
Tensile stress |
C. |
Shear stress |
D. |
Fatigue stress |
E. |
Creep stress |
|
|
Answer: Option D
Explanation:
|
10. |
Which of the following is a non-destructive test? |
A. |
Charpy test |
B. |
Izod Impact test |
C. |
Tensile test |
D. |
Cupping test |
E. |
X-ray test |
|
|
Answer: Option E
Explanation:
|
Read more:
|
|