The angle of twist of a rod under torsion varies diroctly as the length of the rod? a)- true b)- false

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?