Test: Strength of Materials - 2 - Mechanical Engineering MCQ

It flexural strength decreases the maximum slopeof any beam

If temperature of a freely hanging bar is increasedit will develope : -

Find the increase in temperature (DT) so that the gap gets filled

The ratio of hoop stress for a thin cylinder andthin spherical pressure vessel is

A spherical pressure vessel is to be designed tohold 40 MPa pressure and Diameter should be200 mm. If max stress can be 200 MPa find thethickness required.

Shown below is a B.M.D.

The SFD will be

Shown is a B.M.D

The shear force is zero at

Shown is a B.M.D

In the above diagram point of contraflexure is

In the above shown BMD, the beam is mostprobably

Strain Energy for the shown beam is

The B.M.D. for a cantilever beam due to its selfweight is

For a structural member the principle stressesare equal but opposite in nature . The center ofmohr's circle will

The maximum shear stress in a mohr's circle isequal to

A spring of length 'L' is cut into 5 equal parts if initial spring stiffness was R the final stiffness after
parallel combination of all 5 parts will be

It E is the young's Modulus, the minimum value of bulk modulus is

It the dimentions of a prismatic bar hanging fromroof are doubled, the elongation due to its selfweight will become

A long shaft of diameter d is subjected to twisting moment of T. The maximum normal stress acting
at the cross- section is equal to :-

For shafts in parallel which of the following willbe same for all shafts.

How many minimum values among E, G, K, Mwould you require for a isotropic andhomogenous material to determine all state ofstress.

The maximum shear stress in a shaft of Diameter100 mm is 100MPa. The shear stress at adistance of 30 mm from center is .

The depth of a beam of uniform strength vary : -

Which of the following is must for a strut.