Engineering Materials and Metallurgy Mock Test 10

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Question 1 of 10

1. What is the hardness of a rhodium plate?

950-1050 Vickers

140-425 Vickers

720-880 Vickers

540-640 Vickers

Question 1 of 10

Question 2 of 10

2. In shell molding, the pattern and sand are inverted after _________

20-30 seconds

1-2 minutes

45-50 minutes

3-4 hours

Question 2 of 10

Question 3 of 10

3. Which of the following is not a Rockwell hardness scale?

Question 3 of 10

Question 4 of 10

4. What is the relation of solubility and temperature for an age-hardening alloy?

Increases with decrease in temperature

Increases irrespective of temperature

No change due to temperature

Decreases with decrease in temperature

Question 4 of 10

Question 5 of 10

5. What kind of stress does this graph show?

Reversed stress

Fluctuating stress

Constant stress

Irregular stress

Question 5 of 10

Question 6 of 10

6. How much water does natural sand require?

5-8%

14-22%

2-4%

10-12%

Question 6 of 10

Question 7 of 10

7. The tendency of a ductile material to act as brittle is known as __________

Compaction

Brazing

Tempering

Notch sensitivity

Question 7 of 10

Question 8 of 10

8. Phenolic resin and fine dry silica are mixed with ________ for shell mold casting.

Alcohol

Mercury

Cold water

Warm water

Question 8 of 10

Question 9 of 10

9. What kind of indenter is used in a Brinell test?

Pen dot

Diamond cone

Long tube

Steel ball

Question 9 of 10

Question 10 of 10

10. What is the typical machining allowance for aluminum?

0.5 mm

1.6 mm

3.0 mm

2.4 mm

Question 10 of 10