physics

Major appliance

Major appliance is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Major appliance rather than just read about it. In short: A major appliance is a non-portable or semi-portable machine used for routine housekeeping tasks such as cooking, washing laundry, or food preservation. Such appliances are sometimes collectively known as white goods, as the products were traditionally white in color, although a variety of colors are now available.

Key takeaways

Major appliance belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Major appliance to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Major appliance from memory before moving on to harder problems.

Reference excerpt

A major appliance is a non-portable or semi-portable machine used for routine housekeeping tasks such as cooking, washing laundry, or food preservation. Such appliances are sometimes collectively known as white goods, as the products were traditionally white in color, although a variety of colors are now available. An appliance is different from a plumbing fixture because it uses electricity or fuel. Major appliances differ from small appliances because they are bigger and not portable. They are often considered fixtures and part of real estate and as such they are often supplied to tenants as part of otherwise unfurnished rental properties. Major appliances may have special electrical connections, connections to gas supplies, or special plumbing and ventilation arrangements that may be permanently connected to the appliance. This limits where they can be placed in a home. Since major appliances in a home consume a significant amount of energy, they have become the objectives of programs to improve their energy efficiency in many countries. Increasing energy efficiency is often described as an important element of climate change mitigation alongside other improvements like retrofitting buildings to increase building performance. Energy efficiency improvements may require changes in construction of the appliances, or improved control systems. Starting in the 1990s major appliances such as washing machines and air conditioners started to incorporate fuzzy logic-based controls, replacing electromechanical controls such as wash timers in washing machines. These controls incorporated microcontrollers and sensors to control appliance operation at reduced cost while allowing the microcontroller to adjust appliance operation in real time without human intervention, resulting in improved appliance performance.

Terminology They are also known as a large domestic appliance or large electric appliance or simply a large appliance, large domestic, or large electric.

Brands

In the early days of electrification, many major consumer appliances were made by the same companies that made the generation and distribution equipment. While some of these brand names persist to the present day, even if only as licensed use of old popular brand names, today many major appliances are manufactured by companies or divisions of companies that specialize in particular appliances.

Types

Major appliances may be roughly divided as follows:

Refrigeration equipment Freezer Refrigerator Water cooler Ice maker Cooking Kitchen stove, also known as a range, cooker, oven, cooking plate, or cooktop Wall oven Washing and drying equipment Washing machine Clothes dryer Drying cabinet Dishwasher Heating and cooling Air conditioner Furnace Water heater Central heating system

Efficiency

Illustrations

Worked examples

Example 1 — a first encounter with Major appliance

Start with the simplest possible case. Write down what Major appliance claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Major appliance before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Major appliance ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Major appliance

In research: Major appliance appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Major appliance in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Major appliance is common in secondary-school and first-year university syllabi. It links to neighbouring topics Consumer goods, Electromechanical engineering, Hardlines (retail), so understanding it makes those chapters shorter.
In everyday life: Look for Major appliance outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Major appliance in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Major appliance means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Major appliance out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Major appliance in simple terms?

Why does Major appliance matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Major appliance?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Major appliance.