Effektfaktoren er høy.

to be

Breakdown of Effektfaktoren er høy.

• høy: high
• effektfaktoren: the coefficient of performance

Questions & Answers about Effektfaktoren er høy.

Why does effektfaktoren end in -en?

Because -en is the definite singular ending for many en-nouns in Bokmål.

• Indefinite: en effektfaktor
• Definite: effektfaktoren

So effektfaktoren means the power factor.
Norwegian usually attaches the definite article to the end of the noun instead of putting a separate word before it.

Why is there no separate word for the?

In Norwegian, the definite article is often built into the noun itself.

Compare:

• English: the power factor
• Norwegian: effektfaktoren

That final -en already contains the idea of the.

You do sometimes also see a separate determiner with adjectives:

• den høye effektfaktoren = the high power factor

But in your sentence, there is no adjective directly before the noun, so the noun just takes the definite ending by itself: effektfaktoren.

What is the basic dictionary form of effektfaktoren?

The dictionary form is effektfaktor.

Usually you would learn it with its article:

• en effektfaktor = a power factor

From that you get:

• effektfaktoren = the power factor

So if you want to look it up, search for effektfaktor, not effektfaktoren.