Strength Of Materials In Me - Study Mode

[#311] When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
Correct Answer

(C) Shear stress

[#312] The maximum shear stress developed in a beam of circular section is __________ the average shear stress.
Correct Answer

(B) $$frac{4}{3}$$ times

[#313] The maximum shear stress developed in a beam of rectangular section is __________ the average shear stress.
Correct Answer

(C) 1.5 times

[#314] When a load on the free end of a cantilever beam is increased, failure will occur
Correct Answer

(B) At the fixed end

[#315] A beam is loaded as cantilever. If the load at the end is increased, the failure will occur
Correct Answer

(C) At the support

Explanation

Solution: In a cantilever beam , the maximum bending moment occurs at the support where the beam is fixed. When the load at the end is increased, the stress at the support increases significantly. As a result, the failure is most likely to occur at the support , where the bending stress is the highest.