Materials Science Mock Test 4

10%

Question 1 of 10

1. Which of the following can be the value of Poisson's ratio for an engineering structure?

0.4

100

Question 1 of 10

Question 2 of 10

2. Diffusion through grain boundaries is very fast and is called short-circuit diffusion.
Assertion: Their contribution to overall diffusion is negligible.

False

True

Question 2 of 10

Question 3 of 10

3. Greater the angle of inclination of the stress strain curve less is the elasticity.

True

False

Question 3 of 10

Question 4 of 10

4. Principal plane is the plane in which ___________

It doesn't depend upon stresses

Shear stress is zero

Shear stress is maximum

Normal stress is zero

Question 4 of 10

Question 5 of 10

5. Up to which point on the stress-strain curve is Hooke's law valid?

Fracture point

Proportionality limit

Yield point

Elastic limit

Question 5 of 10

Question 6 of 10

6. In a Mohr's circle drawn on the x-y plane, which axis is the axis where shear stress is plotted?

Z-axis

Y- axis

X-axis

Shear stress isn't related to Mohr's circle

Question 6 of 10

Question 7 of 10

7. The yield limit of compression and the tensile test can be different for the same material.

False

True

Question 7 of 10

Question 8 of 10

8. Which of the following property cannot be determined by a tensile test?

Yield stress

Limit of proportionality

Elastic limit

Yield strain

Question 8 of 10

Question 9 of 10

9. Given the cross sectional are as 4 m², what will be the gauge length?

12.3 m

12 m

13 m

11.3 m

Question 9 of 10

Question 10 of 10

10. In which of the following the angle of twist increases fast for a small amount of torque?

Warm working condition

Hot working condition

The increase is the same for cold working, hot working and warm working

Cold working condition

Question 10 of 10