Final answer:
An integral valve seat is pressed into the cylinder head casting in automotive engineering to provide a hard, wear-resistant surface for the engine's valves. The correct answer is B) Pressed.
Step-by-step explanation:
An integral valve seat is pressed into the cylinder head casting. In the context of automotive engineering and engine design, an integral valve seat refers to a ring of hard metal that is seated in the engine’s cylinder head. The function of the valve seat is to provide a durable, wear-resistant surface against which the valve can seal when it closes.
Valve seats can be installed using a number of different methods, but for an integral seat, the preferred method is to press it into the cylinder head casting. This means that the seat is made together with the cylinder head rather than being added afterwards. Because of this . It's worth noting that while a pressed valve seat is very common, other types of valve seats, such as those that are inserted or screwed in, might be used in different types of engines or under different circumstances. Therefore, the correct answer is B) Pressed.