Materials Random Retrieval

1

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

When undertaking practical work to measure the viscosity of liquid, why should the marker the signifies timer start be approximately halfway down the tube?

2 / 10

HMS Astute is a nuclear-powered submarine in service with the Royal Navy, she can dive to depth of 300 m in seawater of density 1024 kgm-3. If the pressure inside the submarine is kept at sea level (1.01x105 Pa), calculate the resultant force on a section of the hull of area 20 m2 at her maximum depth.

3 / 10

Stress and strain are used to calculate the Young's modulus of a material up to its _____________.

4 / 10

The graph above shows a wire being extended by adding masses. Estimate from the graph the Young's modulus.

5 / 10

A 500 mm material undergoes a strain of -3.2%, when measured what is the materials length?

6 / 10

Which material on the graph above is the weakest?

7 / 10

A wire has a diameter of d and a when a force of F is applied, it breaks at σ. What would the value of σ be if the diameter was halved?

8 / 10

A wire has a diameter of 0.5 mm and a breaking stress of the wire is 7.4x1010 Nm-2. Calculate the mass that would break the wire. g = 9.81 ms-2

9 / 10

At which point on the graph shown above is the elastic limit?

10 / 10

Under a 4 N force, two identical springs, in parallel, stretch 130 mm. Calculate the spring constant for one of the springs.

Your score is

0%