Why does a larger synchronous generator have a better rating

[Cocoleia]

Homework Statement

I read in my notes that "The physical size of a synchronous generator of a particular rating is larger than one of a lower rating"

Why is this so ?

The Attempt at a Solution

Is it because a larger one would be able to supply more power and therefore the rating would be higher ?

 

[phinds]

Homework Statement

I read in my notes that "The physical size of a synchronous generator of a particular rating is larger than one of a lower rating"

Why is this so ?

The Attempt at a Solution

Is it because a larger one would be able to supply more power and therefore the rating would be higher ?

Define "rating"