$15.$ True or False: The determination of pressure in internal expanding shoe brakes is irrelevant for their design.

$16.$ True or False: Band brakes offer more uniform wear than block brakes.

$17.$ True or False: Block brakes have a simpler construction compared to band brakes.

$18.$ True or False: Band and block brakes are less commonly used in automotive applications compared to internal expanding shoe brakes.