Learn Turkish: Hangi eser jürice seçildi? - Which work was selected by the jury?

Both jürice and jüri tarafından mean 'by the jury'. The suffix -cE (which becomes -ce or -ca depending on vowel harmony) is a concise way to show the agent in a passive sentence. It is especially common when the agent is an official group, committee, or authority like a jury.

How do we build the passive verb seçildi here?

The root verb is seçmek (to choose or select). To make it passive, we add the passive suffix -il (used for most verb roots ending in a consonant), creating seçilmek (to be selected). Then we add the past tense suffix -di to get 'was selected'.

Why doesn't eser have an accusative suffix if it is the thing being selected?

In passive sentences, the object of the action becomes the grammatical subject of the sentence. Because eser (the work) is the subject here, it stays in its plain dictionary form (nominative case) and does not take the accusative suffix.

Can I use eser to talk about my daily work or job?

No, eser specifically refers to a 'creation' or a 'piece of work' like a book, painting, or musical composition. If you are talking about your daily job, employment, or a physical task, you should use iş.