(computing) A logical operator that returns a value as soon as the outcome is certain, without necessarily testing all operands (for example, an OR operator returning true if the first operand evaluates as true, without evaluating the second operand).

In an electrical grid, the short circuit ratio (or SCR) is the ratio of: the short circuit apparent power in the case of a line-line-line-ground fault at the location in the grid where some generator is connected, to: the power rating of the generator itself.