Mechanical Behaviour and Testing of Materials Mock Test 8

10%

Question 1 of 10

1. ___________ metals fracture toughness is unaffected from temperature increase.

FCC

BCC

HCP

Question 1 of 10

Question 2 of 10

2. DBTT is a great concern in steels.

False

True

Question 2 of 10

Question 3 of 10

3. Which steelmaking method gives the best creep properties?

Open hearth

Induction

Twin hearth

Arc furnace

Question 3 of 10

Question 4 of 10

4. Which of the following is a thermal obstacle?

Second phase particles

Incoherent precipitate

Climb of edge dislocations

Dislocation on parallel slip planes

Question 4 of 10

Question 5 of 10

5. Which impact test would you use for duralumin?

Izod

Charpy (U notch)

No need

Charpy (V notch)

Question 5 of 10

Question 6 of 10

6. Sharper the notch in a specimen, the higher will be the _________ and low the _________

Crystallization temperature, fracture stress

Transition temperature, impact toughness

Crystallization temperature, Impact toughness.

Transition temperature, Fracture stress

Question 6 of 10

Question 7 of 10

7. Izod uses _________ hammer as striker and Charpy use _________ hammer.

Ball pin, forming

Farming, farming

Farming, Ball pin

Ball pin, ball pin

Question 7 of 10

Question 8 of 10

8. Which factor affects ductile brittle transition behaviour the most?

Triaxiality

Strain rate

Notching

Temperature

Question 8 of 10

Question 9 of 10

9. What is the cross section of a standard specimen for impact testing?

10mm×10mm

10mm×20mm

20mm×20mm

15mm×20mm

Question 9 of 10

Question 10 of 10

10. What is the most important method of improving creep strength?

Precipitation hardening

Dispersion hardening

Quenching

Solid solution strengthening

Question 10 of 10