Friday, August 6, 2010

Mechanical Board Exam Review: Materials and Heat Treatment Part 2






Here’s the second part of the set of questions on Materials and Heat Treatment. The purpose of this is to help examinees review for the upcoming mechanical engineer board exam.

Instruction: Choose the BEST answer.

1. An alloy of copper and nickel.
a. Babbitt
b. Monel
c. Inconel
d. Stellite

2. A light and non-magnetic metal with a better strength-to-weight ratio than any other metal at room temperature, and is used in corrosive environment applications.
a. Nickel
b. Titanium
c. Tantalum
d. Aluminum

3. A heat treatment process that promotes uniformity of structure and properties of steel.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

4. A heat treatment process that reduces internal stresses, caused by machining, cold working, or welding.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

5. A heat treatment process used to soften the steel for improved machinability and improve or restore ductility for subsequent forming operations.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

6. The ability of certain materials to absorb vibrations.
a. Toughness
b. Modulus of rupture
c. Damping Capacity
d. Endurance strength

7. Materials that have the same structure at all points are said to be…
a. Orthotropic
b. Isotropic
c. Anisotropic
d. Homogeneous

8. These are flexible materials that can be stretched up to about double their length at room temperature and can return to their original length when released.
a. Rubber
b. Elastics
c. Polymers
d. Elastomers
9. It is a measure of the amount of light transmitted through a given material under specific conditions.
a. Opacity
b. Translucency
c. Transference
d. Transmissibility

10. Major alloying element of stainless steels.
a. Vanadium
b. Nickel
c. Chromium
d. Cobalt

Answers will be posted after 2 days.

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