1. Practice Exam Questions

A set of 50 flashcards covering key terms in electronics, design principles, material properties, and mechanical structures based on the lecture notes.

What is a prototype board?

A thin, insulated board with a grid of electrically connected holes used for prototyping circuits without soldering.

What are two alternative names for a prototype board?

A breadboard or stripboard.

What is the purpose of using a prototype board?

It is used for temporary circuit development.

What is a printed circuit board (PCB)?

A thin, insulated board with copper tracks etched onto its surface, used to mount and connect electronic components.

What is the function of the copper tracks on a PCB?

They are used to mount and connect electronic components to form a functional electrical or electronic circuit.

What is the definition of soldering?

Bonding components or wires by melting and solidifying a metal alloy to ensure conductivity and mechanical strength.

What qualities does soldering provide to a circuit?

Conductivity and mechanical strength.

What is electrical solder?

An alloy, typically made of tin and lead or lead-free alternatives, with a low melting point used to create secure electrical connections.

What are the typical components of electrical solder?

Tin and lead, or lead-free alternatives.

Why is a low melting point important for electrical solder?

It allows for the creation of secure electrical connections by melting and solidifying easily.

What does the command word "Explain" require in an answer?

It means you need to include reasoning or evidence.

How can "user needs" influence the design of a portable water filter bottle?

By considering the age and ability of the primary user to ensure the bottle is easy to open and hold.

What specific features might be needed for a water filter bottle used by adventurers?

Specific features tailored for outdoors, durability, and impact resistance.

How does an outdoor usage environment influence product design?

The product must be durable and resistant to impacts, such as drops or rough handling during activities like hiking.

What is a sustainability consideration for product design?

Using recyclable or biodegradable materials to minimize environmental impact at the end of the product's life.

How can a water filter bottle be developed for users with limited hand strength?

Using sketches and notes to develop a design that is easier to grip or operate.

What is the purpose of integrating a loop handle or attachment point into a bottle design?

To make the product easier to carry or to allow it to be clipped onto a bag.

Why should a prototype model be made before quantity manufacturing?

To test the design and identify necessary changes before the final manufacturing process.

Why is "iterative design" crucial when developing a new product?

It allows for continuous development and refinement based on testing and feedback.

In the pull-along wooden toy example, what material is used for the body?

Hardwood.

What is the material classification for hardwood?

Timber.

What is a reason for using hardwood for the body of a child's toy?

High hardness.

What material is used for the string of the pull-along toy?

Nylon cord.

What is the material classification for nylon cord?

Polymers.

What property makes nylon cord suitable for a toy string?

It is strong.

What is the thickness of the nylon cord used in the toy?

$$3\,\text{mm}$$

What are the wheels of the toy made from?

Medium-density fibreboard (MDF).

What is the material classification for medium-density fibreboard (MDF)?

Timber.

What is a benefit of using MDF for manufacturing toy wheels?

It comes in sheet stock forms.

What does the abbreviation CAD stand for?

Computer-aided design.

What does the abbreviation CAM stand for?

Computer-aided manufacturing.

Name two digital tools used for marking out designs in CAD software.

CAD marking tools (as referenced in the context of marking out the toy body).

Name one appropriate CAM machine for accurately cutting out parts.

A computer-aided manufacturing machine used for precision cutting.

Why is the choice of finish important for a child's wooden toy?

For aesthetics, durability, and to ensure the surface is safe for a child's use.

Why are tolerances important when joining different parts of a toy?

To ensure that parts fit together correctly with the right amount of clearance or interference.

Which drawing technique shows three different views and exact dimensions for manufacturing?

Orthographic drawing.

What is the purpose of an exploded drawing?

To show how individual parts of a product represent the whole and how they are assembled.

What energy conversion occurs in a bicycle dynamo?

The conversion of rotary motion into electrical energy.

What is the purpose of a dynamo on a bicycle?

To power a light on the bicycle.

What type of motion is converted into linear motion by a bicycle's chain drive?

Rotary motion.

Give an example of a specific force acting on a bicycle frame.

Compressive force.

What mechanism is used to drive the wheels of the child's bicycle?

A chain drive mechanism.

A bicycle is an example of what kind of structure?

A frame structure.

What type of structure is suggested for carrying or storing items on a bike?

A shell structure.

What are the board requirements for a shell structure design in the practice question?

It needs a suitable material, a manufacturing method, and a joining modification.

What should be considered when choosing a material for a storage shell structure?

Suitability for the specific environment and the weight requirements.

How are components represented in a circuit diagram like Figure 3.2?

By standard symbols that identify the component and its purpose.

What is a design modification for joining a shell structure to a bicycle frame?

A specific structural change or attachment point to ensure a secure fit to the frame.

What determines the communication and suitability assessment of a design sketch?

How well the sketches and notes explain the idea and how well the idea solves the user problem.

What is the primary function of solder in electronics?

To create secure electrical connections between components.