Question

The maximum force exerted by the valve will determine which force on the rocker arm?

(a) Torsional moment

(b) Tangential moment

(c) Bending moment

(d) Both torsional and tangential moment

I have been asked this question in a national level competition.

My doubt stems from IC Engine in section Design of IC Engine Components of Automotive Engine Design

Answer 1

Right option is (c) Bending moment

To explain I would say: The maximum force exerted by the valve will determine the bending moment on the rocker-arm. Hence, the bending moment is the right answer.