What is the term used for a framework that easily distorts when a force is applied to one corner?

• Stable framework

• Unstable rectangular framework

• Rigid framework

• Triangular framework

Answer explanation

The term used for a framework that easily distorts when a force is applied to one corner is an Unstable rectangular framework.

What is the main structural challenge that skyscrapers face?

• Lack of space

• Excessive swaying during strong winds or earthquakes

• High construction costs

• Limited height

Answer explanation

Skyscrapers face the main structural challenge of excessive swaying during strong winds or earthquakes, which can impact their stability and safety.

How can sheet material be stiffened according to the provided learning material?

• By heating it

• By folding it into a zigzag shape

• By soaking it in water

• By painting it

Answer explanation

Sheet material can be stiffened by folding it into a zigzag shape, as mentioned in the learning material.

What is lamination in the context of reinforcing structures?

• The process of painting a surface

• The process of gluing two or more sheets together

• The process of cutting materials into thin sheets

• The process of heating materials to make them flexible

Answer explanation

Lamination in the context of reinforcing structures refers to the process of gluing two or more sheets together.

What is the characteristic of aeroply or flexiply when not laminated?

• Very rigid

• Very flexible

• Very transparent

• Very brittle

Answer explanation

When not laminated, aeroply or flexiply is very flexible, allowing it to bend easily without breaking.

Ribs are used in the casing of which of the following items?

• Torchlight

• Mobile phone

• Television

• Refrigerator

Answer explanation

Ribs are used in the casing of a Torchlight, making it the correct choice among the given items.

What is the purpose of adding ribs to the walls of a structure?

• To add weight

• To add strength

• To add color

• To add height

Answer explanation

To add strength

What is the primary function of braces in structures?

• To add flexibility to a joint

• To add strength to a joint

• To add weight to a joint

• To add decoration to a joint

Answer explanation

To add strength to a joint

What is the main advantage of using a triangular framework in structures?

• It is more flexible

• It is more stable

• It is easier to build

• It is lighter

Answer explanation

The main advantage of using a triangular framework in structures is that it is more stable.

What is the purpose of using gusset plates in construction?

• To add decoration

• To join structural members

• To reduce weight

• To increase flexibility

Answer explanation

The purpose of using gusset plates in construction is to join structural members.