Test: Strength of Materials Level - 4 - Mechanical Engineering MCQ

In a strained material one of the principal stresses is twice the other. The maximum shear stress in the same case is t_max. Then, what is the value of the maximum principal stress ?

For a general two dimensional stress system, what are the coordinates of the centre of Mohr's circle?

The principal strains at a point in a body, under biaxial state of stress, are 1000 × 10^–6 and -600×10^–6. What is the maximum shear strain at that point ?

If the principal stresses and maximum shearing stresses are of equal numerical value at a point in a stressed body, the state of stress can be termed as

The state of plane stress at a point in a loaded member is given by:

s_x = + 800 MPa

s_y = + 200 MPa

t_xy = ± 400 MPa

The maximum principal stress and maximum shear stress are given by:

Which of the following figures may represent Mohr's circle?

Auto frettage is the method of

From design point of view, spherical pressure vessels are preferred over cylindrical pressure vessels because they

In a thick cylinder pressurized from inside, the hoop stress is maximum at

A thin cylinder with closed lids is subjected to internal pressure and suported at the ends as shown in figure. The state of stress at point X is a s represented as

A thin cylinder with both ends closed is subjected to internal pressure p. The longitudinal stress atthe surface has been calculated as s_o. maximum shear stress at the surface will be equal to

If a thick cylindrical shell is subjected to internal pressure. then hoop stress, radial stress and longitudinal stess at point in the thickness will be

The commonly used technique of strengthening thin pressure vessels is

Auto-frettage is a method of

Where does the maximum hoop stress in a thick cylinder under external pressure occur ?

A seamless pipe of diameter d m is to carry fluid under a pressure of P kN/cm². The necessary thickness t of metal in cm, if the maximum stress is not to exceeds kN/cm² is

Constant bending moment over span 'l' will occur in

The bending moment (M) is constant over a length segment (I) of a beam the shearing force will also be constant over this length and is given by

The given figure shows a cantilever of span L subjected to a concentrated load P and a moment M at the free end. Deflection a the free end is given by

For a cantilever beam of length 'L' flexural rigidity El ad loaded at its free end by a concentrated load W, match List-I with List-II and select  the correct answer using the codes below the lists:

A beam, built in both ends, carries a uniformly distributed load over its entire span as shown in
figure. Which one of the diagrams given below represents bending moment distribution along the length of the beam?

A simply supported beam has equal overhanging lengths and carries equal concentrated loads P at ends. Bending moment over the length between the supports