401. The slenderness ratio is the ratio of
area of column to least radius of gyration
length of column to least radius of gyration
least radius of gyration to area of column
least radius of gyrati
✅ The correct answer is option B.
Strength of Materials MCQs
402. When a closely-coiled helical spring is subjected to an axial load, it is said to be under
bending
shear
torsion
crushing
✅ The correct answer is option C.
403. The assumption, generally, made in the theory of simple bending is that
the beam material is perfectly homogenous and isotropic
the beam material is stressed within its elastic limit
the plane sections before bending remain plane after bending
all of the above
✅ The correct answer is option D.
405. For long columns, thevalue of buckling load is __________ crushing load.
equal to
less than
more than
✅ The correct answer is option B.
406. The shear force at a certain point on a beam changes sign from +ve value to -ve value or vice versa. The bending moment at that point will be zero.
TRUE
FALSE
✅ The correct answer is option B.
407. Young’s modulus may be defined as the ratio of
linear stress to lateral strain
lateral strain to linear strain
linear stress to linear strain
shear stress to shear
✅ The correct answer is option C.
408. The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of w per unit length is
zero
wl2/2
wl2/4
wl2/8
✅ The correct answer is option D.
409. In a thick cylindrical shell subjected to an internal pressure (p), the maximum radial stress at the inner surface of the shell is
zero
p (tensile)
#NAME?
2p (tensile)
✅ The correct answer is option C.
410. 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 minimum normal stress will be
-100 MPa
250 MPa
300 MPa
400 MPa
✅ The correct answer is option A.