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SET 2: REVISION FOR FE MATERIAL SCIENCE & ENGINEERING

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Which term describes the process where a material is stretched and does not return to its original shape?

a)

Elasticity

b)

Plasticity

c)

Resilience

d)

Toughness

2.

In the stress-strain diagram, the point corresponding to the maximum stress the material can withstand before fracture is typically called:

a)

Yield Strength

b)

Fracture Point

c)

Ultimate Tensile Strength

d)

Proportional Limit

3.

What is the chemical formula for Cementite, a hard and brittle constituent in the Iron-Carbon system?

a)

FeO

b)

Fe3C

c)

Fe2C

d)

FeC3

4.

Alpha Ferrite is a solid solution of carbon in iron with a Body-Centered Cubic (BCC) structure that exists at:

a)

High temperatures

b)

Temperatures between 912^C to 1394^C

c)

Low temperatures (e.g., room temperature)

d)

Any temperature above 1500^C

5.

Materials like Aluminum and Copper are typically classified as:

a)

Ferrous Metals

b)

Non-Ferrous Alloys

c)

Ceramics

d)

Polimers

6.

Metalworking performed above the recrystallization temperature is known as:

a)

Cold Working

b)

Hot Working

c)

Deep Drawing

d)

Annealing

7.

A key advantage of Hot Working is:

a)

Better surface finish

b)

High dimensional accuracy

c)

Elimination of porosity and refinement of grain structure

d)

Increased strength without heat treatment

8.

Which casting process is often called 'lost-wax casting' and is known for producing complex, high-precision components?

a)

Sand Casting

b)

Die Casting

c)

Investment Casting

d)

Continuous Casting

9.

Which metal forming process involves forcing a material through a die opening to create a product with a continuous cross-section (like a rod or tube)?

a)

Rolling

b)

Forging

c)

Wire Drawing

d)

Extrusion

10.

Pitting corrosion is best described as a form of corrosion that:

a)

Affects the entire surface uniformly.

b)

Causes the cracking of the material under stress.

c)
  • Occurs between dissimilar metals.

d)

Creates small, localized holes or cavities on the metal surface.

11.

To prevent corrosion in a pipe, adding a chemical substance to the fluid flowing through the pipe to slow down the reaction is using:

a)

Coating

b)

An Inhibitor

c)

Cathodic Protection

d)

Galvanizing

12.

The corrosion that occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte is called:

a)

Pitting Corrosion

b)

Crevice Corrosion

c)

Galvanic Corrosion

d)

Stress Corrosion Cracking

13.

Which material testing method is typically used to detect internal defects or flaws in metallic materials using sound waves?

a)

Ultrasonic Testing (UT)

b)

Magnetic Particle Inspection (MPI)

c)

Eddy Current Testing (ECT)

d)
  • Liquid Penetrant Testing (LPT)

14.

Which statement is a key advantage of Non-Destructive Testing (NDT) over Destructive Testing (DT)?

a)

It is much faster and cheaper.

b)

The tested part remains usable after the inspection

c)

It provides a measure of ultimate strength.

d)

It can only find internal flaws.

15.

What two material properties are compared in the Brinell and Vickers hardness tests?

a)

Ductility and Brittleness

b)

Tensile Strength and Yield Strength

c)
  1. Modulus of Elasticity and Toughness

d)

Resistance to permanent indentation and load applied