Technician A says that two truck frame rails with exactly equal RBMs,can have very different dynamic performance.Technician B says that highway tractors are required to have much higher section modulus (SM)than dump trucks.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because while two truck frame rails can have the same Resistance Bending Moment (RBM), their dynamic performance can differ due to factors like material properties, design, and weight distribution. Technician B is incorrect because the requirement for a higher Section Modulus (SM) depends on the specific application and load requirements, not necessarily the type of truck (highway tractor vs. dump truck).

Technician a Says That Two Truck Frame Rails with Exactly