Engineering Materials and Metallurgy Mock Test 2

10%

Question 1 of 10

1. Which figure represents the branched molecular structure?

engineering-materials-metallurgy-questions-answers-polymers-polymerization-q7d

engineering-materials-metallurgy-questions-answers-polymers-polymerization-q7c

engineering-materials-metallurgy-questions-answers-polymers-polymerization-q7a

engineering-materials-metallurgy-questions-answers-polymers-polymerization-q7b

Question 1 of 10

Question 2 of 10

2. What is the melting point of zinc?

419^oC

907^oC

600^oC

950^oC

Question 2 of 10

Question 3 of 10

3. α brasses contain ______ of zinc.

<=36%

100%

>36%

Question 3 of 10

Question 4 of 10

4. Addition of which element turns the Invar alloy into Elinvar alloy?

Manganese

Tin

Copper

Chromium

Question 4 of 10

Question 5 of 10

5. Which of the following is an application of leaded bronze?

Vacuum cleaner

Extractor fan

Aero engine

Washing machine

Question 5 of 10

Question 6 of 10

6. What is the specific gravity of magnesium?

8.9

1.74

6.3

2.7

Question 6 of 10

Question 7 of 10

7. Addition of tellurium to copper results in ________

Increased machinability

Decreased electrical conductivity

No effect

High strength

Question 7 of 10

Question 8 of 10

8. A magnesium alloy containing 3% rare earth metal exhibits which of the following characteristics?

Good founding properties

Die-casting alloy

Creep resistance up to 250^oC

Good overall properties

Question 8 of 10

Question 9 of 10

9. Which of the following is not a property of magnesium?

Expensive

Heavyweight

Vulnerable to corrosion

Low strength

Question 9 of 10

Question 10 of 10

10. Babbit metals are also known as _______

Aluminum-base alloys

Tin-base alloys

Copper-base alloys

Lead-base alloys

Question 10 of 10