A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then

tube is under tension and rod is under compression

both rod and tube are under compression

tube is under tension and rod is under compression

The Rankine's theory for active earth pressure is based on the assumption that

the retained material is homogeneous and cohesionless

the frictional resistance between the retaining wall and the retained material is neglected

the failure of the retained material takes place along a plane called rupture plane

When a shaft, is subjected to torsion, the shear stress induced in the shaft varies from

maximum at the centre to zero at the circumference

minimum at the centre to maximum at the circumference

maximum at the centre to minimum at the circumference

zero at the centre to maximum at the circumference

maximum at the centre to zero at the circumference

When a body is subjected to two equal and opposite forces, acting tangentially across the resisting section, as a result of which the body tends to shear off across the section, the stress and strain induced is

compressive stress, compressive strain

A cantilever beam is one which is

fixed at one end and free at the other end

supported on more than two supports

Fatigue test is carried out for

stresses varying between two limits of equal value, but of opposite sign

stresses varying between two limits of unequal value, but of opposite sign

stresses varying between two limits of unequal value but of same sign

A riveted joint may fail by

tearing of the plate at an edge

tearing of the plate across a row of rivets

A beam of uniform strength may be obtained by

keeping the width uniform and varying the depth

keeping the depth uniform and varying the width

varying the width and depth both

948 + Mcqs in Strength of Materials Page 12 McqOptions

551.	A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» B. False

Discussion

552.	The neutral axis of the symmetrical beam does not pass through the centroid of the beam.
A.	Agree
B.	Disagree
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

553.	In Mohr's circle, the centre of circle from Y-axis is taken as
A.	A
B.	B
C.	C
D.	D
Answer» C. C

Discussion

554.	The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
A.	one right angled triangle
B.	two right angled triangles
C.	one equilateral triangle
D.	two equilateral triangles
Answer» C. one equilateral triangle

Discussion

555.	Two closely coiled helical springs 'A' and 'B' are equal in all respects but the diameter of wire of spring 'A' is double that of spring 'B' The stiffness of spring 'B' will be __________ that of spring 'A'
A.	one-sixteenth
B.	one-eighth
C.	one-fourth
D.	one-half
Answer» B. one-eighth

Discussion

556.	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
A.	-100 MPa
B.	250 MPa
C.	300 MPa
D.	400 MPa
Answer» B. 250 MPa

Discussion

557.	The proof resilience per unit volume of a material is known as modulus of resilience.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» B. False

Discussion

558.	The values of equivalent length (L) and actual length (l) of a column for both ends hinged is the same
A.	Yes
B.	No
C.	Can't say
D.	None of these
Answer» B. No

Discussion

559.	When the shear force diagram between any two points is an inclined straight line, it indicates that there is a uniformly varying load between the two points.
A.	Yes
B.	No
C.	Can't say
D.	None of these
Answer» B. No

Discussion

560.	The maximum deflection of a fixed beam of length l carrying a central point load W is
A.	A
B.	B
C.	C
D.	D
Answer» D. D

Discussion

561.	In a thin cylindrical shell subjected to an internal pressure p, the ratio of longitudinal stress to the hoop stress is
A.	1/2
B.	3/4
C.	1
D.	1.5
Answer» B. 3/4

Discussion

562.	A simply supported beam 'A' of length l, breadth b, and depth d carries a central point load W. Another beam 'B' has the same length and depth but its breadth is doubled. The deflection of beam 'B' will be __________ as compared to beam 'A'.
A.	one-fourth
B.	one-half
C.	double
D.	four times
Answer» C. double

Discussion

563.	Two shafts 'A' and 'B' are made of same material. The shaft 'A' is of diameter D and shaft 'B' is of diameter D/2. The strength of shaft 'B' is __________ as that of shaft 'A'
A.	one-eighth
B.	one-fourth
C.	one-half
D.	four times
Answer» B. one-fourth

Discussion

564.	The shear force at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre, is
A.	zero
B.	wl/4
C.	wl/2
D.	wl2/2
Answer» B. wl/4

Discussion

565.	The thickness of a thin cylindrical shell with hemispherical ends is __________ that of spherical ends.
A.	equal to
B.	more than
C.	less than
D.	None of these
Answer» C. less than

Discussion

566.	The moment of resistance of a balanced reinforced concrete beam is based on the stresses in
A.	steel only
B.	concrete only
C.	steel and concrete both
D.	none of these
Answer» D. none of these

Discussion

567.	The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.
A.	equal to
B.	less than
C.	more than
D.	None of these
Answer» D. None of these

Discussion

568.	The distance between the centres of rivets in adjacent rows of zig-zag riveted joint, is called back pitch.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

569.	A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then
A.	rod is under compression
B.	tube is under compression
C.	both rod and tube are under compression
D.	tube is under tension and rod is under compression
Answer» D. tube is under tension and rod is under compression

Discussion

570.	The Rankine's theory for active earth pressure is based on the assumption that
A.	the retained material is homogeneous and cohesionless
B.	the frictional resistance between the retaining wall and the retained material is neglected
C.	the failure of the retained material takes place along a plane called rupture plane
D.	all of the above
Answer» E.

Discussion

571.	A load which acts at a point on a beam is not called uniformly distributed load.
A.	Agree
B.	Disagree
C.	Can't say
D.	None of these
Answer» B. Disagree

Discussion

572.	The strain energy stored in a body due to shear stress, is (where τ = Shear stress, C = Shear modulus, and V = Volume of the body)
A.	τV/2C
B.	2C/τV
C.	τ²V/2C
D.	2C/τ²V
Answer» D. 2C/τ²V

Discussion

573.	When a shaft, is subjected to torsion, the shear stress induced in the shaft varies from
A.	minimum at the centre to maximum at the circumference
B.	maximum at the centre to minimum at the circumference
C.	zero at the centre to maximum at the circumference
D.	maximum at the centre to zero at the circumference
Answer» D. maximum at the centre to zero at the circumference

Discussion

574.	A fixed beam is one which is fixed at __________ of its ends.
A.	one
B.	both
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

575.	The maximum shear stress is __________ the algebraic difference of maximum and minimum normal stresses.
A.	equal to
B.	one-fourth
C.	one-half
D.	twice
Answer» D. twice

Discussion

576.	The maximum shear stress in a thin cylindrical shell subjected to internal pressure p is
A.	pd/t
B.	pd/2t
C.	pd/4t
D.	pd/8t
Answer» E.

Discussion

577.	When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the
A.	top layer
B.	bottom layer
C.	neutral axis
D.	every cross-section
Answer» B. bottom layer

Discussion

578.	When a beam is subjected to bending moment, the stress at any point is __________ the distance of the point from the neutral axis.
A.	equal to
B.	directly proportional to
C.	inversely proportional to
D.	independent of
Answer» C. inversely proportional to

Discussion

579.	The shear force at apoint on a beam is the algebraic __________ of all the forces on either side of the point.
A.	sum
B.	difference
C.	Can't say
D.	None of these
Answer» B. difference

Discussion

580.	If the diameter of pressure vessel is 15 times the wall thickness, the vessel is said to be a thick shell.
A.	Agree
B.	Disagree
C.	Can't say
D.	None of these
Answer» B. Disagree

Discussion

581.	The perpendicular distance between the centre lines of the successive rows, is called pitch.
A.	Agree
B.	Disagree
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

582.	When a body is subjected to two equal and opposite forces, acting tangentially across the resisting section, as a result of which the body tends to shear off across the section, the stress and strain induced is
A.	tensile stress, tensile strain
B.	compressive stress, compressive strain
C.	shear stress, tensile strain
D.	shear stress, shear strain
Answer» E.

Discussion

583.	The shear force diagram fora cantilever beam of length l and carrying a gradually varying load from zero at free end and w per unit length at the fixed end is a
A.	horizontal straight line
B.	vertical straight line
C.	inclined line
D.	parabolic curve
Answer» E.

Discussion

584.	A cantilever beam is one which is
A.	fixed at both ends
B.	fixed at one end and free at the other end
C.	supported at its ends
D.	supported on more than two supports
Answer» C. supported at its ends

Discussion

585.	Fatigue test is carried out for
A.	stresses varying between two limits of equal value, but of opposite sign
B.	stresses varying between two limits of unequal value, but of opposite sign
C.	stresses varying between two limits of unequal value but of same sign
D.	all of the above
Answer» E.

Discussion

586.	The strain energy stored in a body, when the load is gradually applied, is (where σ = Stress in the material of the body, V = Volume of the body, and E = Modulus of elasticity of the material)
A.	σV/E
B.	σE/V
C.	σ²E/2V
D.	σ²V/2E
Answer» E.

Discussion

587.	In the below figure, __________ represents glass.
A.	curve A
B.	curve B
C.	curve C
D.	curve D
Answer» D. curve D

Discussion

588.	The horizontal thrust offered by the retaining wall on the retained material is (where w = Specific weight of the retained material, h = height of retaining wall, and (φ) = Angle of repose of the retained earth)
A.	A
B.	B
C.	C
D.	D
Answer» C. C

Discussion

589.	A shear stress across a plane, is always accompanied by a balancing shear stress across the plane and normal to it.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

590.	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.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

591.	A beam extending beyond the supports is called
A.	simply supported beam
B.	fixed beam
C.	overhanging beam
D.	cantilever beam
Answer» D. cantilever beam

Discussion

592.	The bending moment at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre is wl/4.
A.	Yes
B.	No
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

593.	If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

594.	When the retained material is subjected to some superimposed or surcharged load, the total horizontal pressure due to surcharged load is (where p = Intensity of the supercharged load)
A.	A
B.	B
C.	C
D.	D
Answer» B. B

Discussion

595.	Two shafts 'A' and 'B' have the same material. The shaft 'A' is solid of diameter 100 mm. The shaft 'B' is hollow with outer diameter 100 mm and inner diameter 50 mm. The torque transmitted by shaft 'B' is __________ as that of shaft 'A'.
A.	1/6
B.	1/8
C.	1/4
D.	15/16
Answer» E.

Discussion

596.	A riveted joint may fail by
A.	tearing of the plate at an edge
B.	tearing of the plate across a row of rivets
C.	shearing of rivets
D.	any one of these
Answer» E.

Discussion

597.	A leaf spring is supported at the
A.	ends and loaded at the centre
B.	centre and loaded at the ends
C.	ends and loaded anywhere
D.	centre and loaded anywhere
Answer» C. ends and loaded anywhere

Discussion

598.	A beam of uniform strength may be obtained by
A.	keeping the width uniform and varying the depth
B.	keeping the depth uniform and varying the width
C.	varying the width and depth both
D.	any one of the above
Answer» E.

Discussion

599.	The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.
A.	directly
B.	inversely
C.	Can't say
D.	None of these
Answer» C. Can't say

Discussion

600.	The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.
A.	True
B.	False
C.	Can't say
D.	None of these
Answer» B. False

Discussion

Explore topic-wise MCQs in Surveying.

A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.

The neutral axis of the symmetrical beam does not pass through the centroid of the beam.

In Mohr's circle, the centre of circle from Y-axis is taken as

The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of

Two closely coiled helical springs 'A' and 'B' are equal in all respects but the diameter of wire of spring 'A' is double that of spring 'B' The stiffness of spring 'B' will be __________ that of spring 'A'

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

The proof resilience per unit volume of a material is known as modulus of resilience.

The values of equivalent length (L) and actual length (l) of a column for both ends hinged is the same

When the shear force diagram between any two points is an inclined straight line, it indicates that there is a uniformly varying load between the two points.

The maximum deflection of a fixed beam of length l carrying a central point load W is

In a thin cylindrical shell subjected to an internal pressure p, the ratio of longitudinal stress to the hoop stress is

A simply supported beam 'A' of length l, breadth b, and depth d carries a central point load W. Another beam 'B' has the same length and depth but its breadth is doubled. The deflection of beam 'B' will be __________ as compared to beam 'A'.

Two shafts 'A' and 'B' are made of same material. The shaft 'A' is of diameter D and shaft 'B' is of diameter D/2. The strength of shaft 'B' is __________ as that of shaft 'A'

The shear force at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre, is

The thickness of a thin cylindrical shell with hemispherical ends is __________ that of spherical ends.

The moment of resistance of a balanced reinforced concrete beam is based on the stresses in

The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.

The distance between the centres of rivets in adjacent rows of zig-zag riveted joint, is called back pitch.

A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then

The Rankine's theory for active earth pressure is based on the assumption that

A load which acts at a point on a beam is not called uniformly distributed load.

The strain energy stored in a body due to shear stress, is (where τ = Shear stress, C = Shear modulus, and V = Volume of the body)

When a shaft, is subjected to torsion, the shear stress induced in the shaft varies from

A fixed beam is one which is fixed at __________ of its ends.

The maximum shear stress is __________ the algebraic difference of maximum and minimum normal stresses.

The maximum shear stress in a thin cylindrical shell subjected to internal pressure p is

When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the

When a beam is subjected to bending moment, the stress at any point is __________ the distance of the point from the neutral axis.

The shear force at apoint on a beam is the algebraic __________ of all the forces on either side of the point.

If the diameter of pressure vessel is 15 times the wall thickness, the vessel is said to be a thick shell.

The perpendicular distance between the centre lines of the successive rows, is called pitch.

When a body is subjected to two equal and opposite forces, acting tangentially across the resisting section, as a result of which the body tends to shear off across the section, the stress and strain induced is

The shear force diagram fora cantilever beam of length l and carrying a gradually varying load from zero at free end and w per unit length at the fixed end is a

A cantilever beam is one which is

Fatigue test is carried out for

The strain energy stored in a body, when the load is gradually applied, is (where σ = Stress in the material of the body, V = Volume of the body, and E = Modulus of elasticity of the material)

In the below figure, __________ represents glass.

The horizontal thrust offered by the retaining wall on the retained material is (where w = Specific weight of the retained material, h = height of retaining wall, and (φ) = Angle of repose of the retained earth)

A shear stress across a plane, is always accompanied by a balancing shear stress across the plane and normal to it.

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.

A beam extending beyond the supports is called

The bending moment at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre is wl/4.

If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.

When the retained material is subjected to some superimposed or surcharged load, the total horizontal pressure due to surcharged load is (where p = Intensity of the supercharged load)

Two shafts 'A' and 'B' have the same material. The shaft 'A' is solid of diameter 100 mm. The shaft 'B' is hollow with outer diameter 100 mm and inner diameter 50 mm. The torque transmitted by shaft 'B' is __________ as that of shaft 'A'.

A riveted joint may fail by

A leaf spring is supported at the

A beam of uniform strength may be obtained by

The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.

The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.