Raising 2nd best hand

[RedeemerKing]

I know this strategy could be very helpful in winning. But if u know you are beat by 1 opponent who isnt goin to fold...why raise? I think it has to do raising to narrow the field to improve your odds. But if u know u need to suckout to win dont u want some callers to increase the pot size.
Can someone gimme an example of this strategy in practice. And how valuable/useful is it at the 2-4$ to 5-10$ small stakes limit