Straight Knife Hinges
Straight knife hinges are generally used in the illustrated application. The door overlays the sides and is inset into the top and bottom.
Mortising is simple so long as those in the casework are cut before assembly or cut by hand. Not much adjustment is possible with this kind of hinge though some can be achieved by fitting one screw only per leaf and lengthening the appropriate mortise if necessary before fitting the remaining screws.