Elektronska oprema izgleda novo.

• elektronska = electronic, an adjective
• oprema = equipment, a noun
• izgleda = looks / appears, the verb
• novo = new, used here after izgleda

So the structure is basically:

electronic equipment + looks + new

Because Serbian adjectives must agree with the noun they describe in gender, number, and case.

Here, oprema is:

• feminine
• singular
• nominative

So the adjective must also be feminine singular nominative:

• elektronska oprema

Compare:

• elektronski uređaj = electronic device
• elektronsko kolo = electronic circuit

It is singular.

Even though equipment can refer to many separate items, Serbian oprema is grammatically a singular mass/collective noun, much like English equipment.

That is why the verb is also singular:

• oprema izgleda = the equipment looks

Not:

• oprema izgledaju

If you want to talk about individual items, Serbian often uses other nouns, such as uređaji, komadi opreme, or something more specific.

Izgleda is the 3rd person singular present tense of izgledati.

In this sentence it means looks or appears.

Because the subject oprema is singular, the verb is singular too:

• oprema izgleda

No.

• je nova = is new
• izgleda novo = looks new / appears new

So izgleda talks about appearance, not necessarily reality.

For example, something may look new even if it is actually old.

This is one of the most common questions.

After verbs like izgledati, Serbian very often uses the neuter predicative/adverbial form:

• izgleda dobro = looks good
• izgleda lepo = looks nice
• izgleda loše = looks bad
• izgleda novo = looks new

So even though oprema is feminine, the word after izgleda is often this -o form.

If you use biti instead, you would normally match the adjective to the noun:

• Elektronska oprema je nova.

But with izgledati, novo is very natural.

It is in the nominative singular, because it is the subject of the sentence.

• oprema = nominative singular
• elektronska matches it in nominative singular feminine

The word novo is not a direct object here. It functions as a complement after izgleda.

Because Serbian does not have articles like a or the.

So Elektronska oprema izgleda novo can mean:

• Electronic equipment looks new
• The electronic equipment looks new

The exact meaning depends on context.

If Serbian wants to make it more specific, it can use a demonstrative such as:

• Ta elektronska oprema izgleda novo. = That / that specific electronic equipment looks new.

Yes. This is the most neutral and natural order:

subject + verb + complement

• Elektronska oprema
  • izgleda
    • novo

Serbian word order is fairly flexible, but this version is the best default one for learners.

You simply put ne before the verb:

Elektronska oprema ne izgleda novo.

That means:

The electronic equipment does not look new.