science

Nemko

Nemko is a science 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 Nemko rather than just read about it. In short: Norges Elektriske Materiellkontroll (NEMKO) is a Norwegian private organization that supervises safety testing for electrical equipment manufacturing. The Nemko Group offers testing, inspection and certification services concerning products, machinery, installations and systems worldwide.

Key takeaways

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

Reference excerpt

Norges Elektriske Materiellkontroll (NEMKO) is a Norwegian private organization that supervises safety testing for electrical equipment manufacturing. The Nemko Group offers testing, inspection and certification services concerning products, machinery, installations and systems worldwide.

History The original NEMKO was established in 1933 as an institution for mandatory safety testing and national approval of electrical equipment marketed and sold in Norway for connection to the public utility network. Later, testing of radio interference requirements became another part of the approval regime. In 1990, as Norway entered into the European Economic Area agreement, European Community Directives for product safety were adopted, and the traditional mandatory approval scheme was abandoned. As this stage, NEMKO was transformed into an independent, self-owned foundation, having a council of representatives from different interest groups (industry and trade organizations, consumer associations, utility companies etc.) as the highest level of supervision. At the same time, the foundation established and became the sole owner of Nemko AS, which constitutes the central operating company and is responsible for what is today denoted the Nemko Group. Since 1992, the scope of services has expanded to testing, inspection, and certification services concerning products and systems in more than 150 countries. In 2020, the company approved Apple's iPhone 12 charger with a USB-C connection.

Worked examples

Example 1 — a first encounter with Nemko

Start with the simplest possible case. Write down what Nemko claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Nemko 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 Nemko 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 Nemko

In research: Nemko appears in science 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 Nemko 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: Nemko is common in secondary-school and first-year university syllabi. It links to neighbouring topics Business organisations based in Norway, Certification marks, Electrical safety standards organizations, so understanding it makes those chapters shorter.
In everyday life: Look for Nemko 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 Nemko in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nemko 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 Nemko out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nemko in simple terms?

Why does Nemko matter?

Because it connects several science 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 Nemko?

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 Nemko.