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Strength of materials
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Principle plane is a plane on which the shear stress is? zero [other wrong options] [Discuss in forum] minimum maximum lowest |
Q22 ⇒ When a load on the free end of a cantilever beam is increased, failure will occur at the fixed end [other wrong options] [Discuss in forum] at the free end in the middle of the beam at a distance 2l/3 from free end |
Q23 ⇒ The extremeties of any diameter on Mohr's circle represent? normal stresses on planes at 45° [other wrong options] [Discuss in forum] principal stresses shear stresses on planes at 45° normal and shear stresses on a plane |
Q24 ⇒ A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum normal stress will be 400 MPa400 MPa [other wrong options] [Discuss in forum] -100 MPa 250 MPa 300 MPa |
Q25 ⇒ Strain is defined as the ratio of any one of the above [other wrong options] [Discuss in forum] change in volume to original volume change in length to original length change in cross-sectional area to original cross-sectional area none of the above. |
Q26 ⇒ The ratio of change in volume to the original volume is called. volumetric strain [other wrong options] [Discuss in forum] linear strain lateral strain Poisson's ratio |
Q27 ⇒ A riveted joint may fail by. any one of these [other wrong options] [Discuss in forum] tearing of the plate at an edge tearing of the plate across a row of rivets shearing of rivets |
Q28 ⇒ Hooke's law holds good upto limit of proportionality [other wrong options] [Discuss in forum] yield point breaking point elastic limit plastic limit. |
Q29 ⇒ When a closely-coiled helical spring is subjected to an axial load, it is said to be under. torsion [other wrong options] [Discuss in forum] bending shear crushing |
Q30 ⇒ A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be double [other wrong options] [Discuss in forum] same half one-fourth |
Q31 ⇒ Young's modulus is defined as the ratio of longitudinal stress and longitudinal strain [other wrong options] [Discuss in forum] volumetric stress and volumetric strain lateral stress and lateral strain shear stress to shear strain longitudinal stress and lateral strain. |
Q32 ⇒ The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length. one-third [other wrong options] [Discuss in forum] equal to half two-third |
Q33 ⇒ A rectangular beam of length l supported at its two ends carries a central point load W. The maximum deflection occurs. at the centre [other wrong options] [Discuss in forum] at the ends at l/3 from both ends none of these |
Q34 ⇒ The unit of Young's modulus is kg/cm2 [other wrong options] [Discuss in forum] mm/mm kg/cm kg kg cm2. |
Q35 ⇒ A bar of length L metres extends by l mm under a tensile force of P. The strain produced in the bar is. 0.001 l/L [other wrong options] [Discuss in forum] l/L 0.1 l/L 0.01 l/L |
Q36 ⇒ When there is a sudden increase or decrease in shear force diagram between any two points, it indicates that there is a point load at the two points [other wrong options] [Discuss in forum] no loading between the two points uniformly distributed load between the two points uniformly varying load between the two points |
Q37 ⇒ Deformation per unit length in the direction of force is known as linear strain [other wrong options] [Discuss in forum] strain lateral strain linear stress unit strain. |
Q38 ⇒ In the below figure, the point E represents the maximum stress. False [other wrong options] [Discuss in forum] True maximum none of these |
Q39 ⇒ The maximum shear stress is __________ the algebraic difference of maximum and minimum normal stresses. one-half [other wrong options] [Discuss in forum] equal to one-fourth twice |
Q40 ⇒ It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called tensile stress [other wrong options] [Discuss in forum] internal resistance transverse stress compressive stress working stress. |
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