hatásfokát

Hatásfokát is a Hungarian grammatical form of hatásfok, a noun meaning efficiency, effectiveness, or performance. The base word hatásfok combines hatás (effect) and fok (degree or level). In everyday and technical usage, hatásfok refers to how efficiently a system converts input into useful output. Hatásfokát is the definite accusative singular form, used when the efficiency of a specific device, process, or system is the direct object of a verb or otherwise marked as definite.

In scientific and engineering contexts, hatásfok denotes the ratio of useful output to total input energy or power. It is typically expressed as a dimensionless quantity between 0 and 1, or as a percentage. Common variants include mechanical hatásfok, thermal hatásfok, and electrical hatásfok, reflecting different loss mechanisms such as friction, heat dissipation, and irreversibilities. The theoretical maximum is 1 (100%), but real systems have losses that reduce the hatásfok.

Calculation and interpretation depend on the domain. For example, η = P_out / P_in, where P_out is useful power and P_in is input power. Losses include mechanical friction, heat, leakage, and control inefficiencies. In practice, improving hatásfok involves reducing losses, improving materials, and optimizing design and control strategies.

Usage of hatásfokát occurs when referring to the efficiency of a particular item: "A motor hatásfokát 85%-ra növelték." When speaking generally, hatásfok or hatásfokot may be used without the definite form.