Learn Hardcore Turkish: Jeneratör çalışıyor.

The verb çalışıyor breaks down into three parts: the root çalış meaning “to work,” the present continuous suffix -yor, and an implicit third-person singular marker (zero suffix). Altogether, çalışıyor means “he/she/it is working.”

Why does the suffix appear as -ıyor and not -iyor?

Turkish uses vowel harmony. Because the last vowel in the root çalış is a (a back unrounded vowel), the corresponding suffix vowel must be the back unrounded ı, giving you -ıyor. With different root vowels, you’d get -iyor, -uyor or -üyor.

Why is there no explicit subject pronoun “it” in Jeneratör çalışıyor?

In Turkish, subject pronouns are often dropped if they’re clear from the verb suffix. The suffix on çalışıyor is zero-marked for third-person singular, so you know the subject is “he/she/it” without needing o (“he/she/it”).

How do you say “the generators are working” in Turkish?

You pluralize the noun: Jeneratörler. Then you can either keep the verb in third-person singular or explicitly pluralize it:

Jeneratörler çalışıyor. (common, even with plural subject)
(emphatic plural on the verb)