$5.$ True or False: Dampers are used in mechanical systems primarily to reduce noise.

$6.$ True or False: The firing order of an engine does not affect its vibration characteristics.

$7.$ True or False: In V$-$engines, balancing is more straightforward than in inline engines due to their geometry.

$8.$ True or False: High$-$speed rotors require more precise balancing than low$-$speed rotors due to the greater forces at play.