In a thick cylindrical shell subjected to an internal pressure (), the radial stress across the thickness of the cylinder is

maximum at the outer surface and minimum at the inner surface

maximum at the inner surface and minimum at the outer surface

maximum at the outer surface and zero at the inner surface

maximum at the inner surface arid zero at the outer surface

Rivets are generally specified by

thickness of plates to be joined

When a bar of length , width and thickness is subjected to a pull of , its

length decreases, width and thickness increases

length, width and thickness increases

length, width and thickness decreases

length increases, width and thickness decreases

length decreases, width and thickness increases

In a thick cylindrical shell subjected to an internal pressure (), the tangential stress across the thickness of a cylinder is

maximum at the outer surface and zero at the inner surface

maximum at the outer surface and minimum at the inner surface

maximum at the inner surface and minimum at the outer surface

maximum at the outer surface and zero at the inner surface

maximum at the inner surface and zero at the outer surface

When a bar of length , width and thickness is subjected to a push of , its

length, width and thickness increases

length, width and thickness decreases

length increases, width and thickness decreases

length decreases, width and tickness increases

134 + Mcqs in Strength Of Materials in Mechanical Engineering Page 1 McqOptions

1.	In a thick cylindrical shell subjected to an internal pressure (), the radial stress across the thickness of the cylinder is
A.	maximum at the outer surface and minimum at the inner surface
B.	maximum at the inner surface and minimum at the outer surface
C.	maximum at the outer surface and zero at the inner surface
D.	maximum at the inner surface arid zero at the outer surface
Answer» E.

Discussion

2.	In order to avoid tearing off the plate at an edge, the distance from the centre of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where = Diameter of rivet hole in mm)
A.	1.5
B.	2
C.	2.5
Answer» C. 2.5

Discussion

3.	In a cantilever beam of length subjected to a uniformly distributed load of per unit length, the maximum deflection lies at the fixed end.
A.	Yes
B.	No
Answer» C.

Discussion

4.	According to Euler's column theory, the crippling load for a column of length () fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
A.	equal to
B.	two times
C.	four times
D.	eight times
Answer» D. eight times

Discussion

5.	The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of per unit length is
A.	zero
B.	/2
C.	/4
D.	/8
Answer» E.

Discussion

6.	For the beam shown in the below figure, the shear force at is equal to
A.	/6
B.	/3
C.	2
D.	/3
Answer» C. 2

Discussion

7.	According to Euler's column theory, the crippling load for a column of length () with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.
A.	equal to
B.	less than
C.	more than
Answer» C. more than

Discussion

8.	The shear force diagram for a simply supported beam carrying a uniformly distributed load of 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

9.	A body is subjected to two normal stresses 20 kN/m (tensile) and 10 kN/m (compressive) acting perpendicular to each other. The maximum shear stress is
A.	5 kN/m
B.	10 kN/m
C.	15 kN/m
D.	20 kN/m
Answer» D. 20 kN/m

Discussion

10.	The rectangular beam '' has length , width and depth . Another beam '' has the same length and width but depth is double that of ''. The elastic strength of beam will be __________ as compared to beam .
A.	same
B.	double
C.	four times
D.	six times
Answer» D. six times

Discussion

11.	Two shafts '' and '' are made of same material. The shaft '' is solid and has diameter . The shaft '' is hollow with outer diameter and inner diameter /2. The strength of hollow shaft in torsion is __________ as that of solid shaft.
A.	1/16
B.	1/8
C.	1/4
D.	15/16
Answer» E.

Discussion

12.	The bending moment of a cantilever beam of length and carrying a gradually varying load from zero at free end and per unit length at the fixed end is __________ at the fixed end.
A.	/2
B.	/2
C.	/6
Answer» E.

Discussion

13.	In the below figure, the stress corresponding to point is
A.	yield point stress
B.	breaking stress
C.	ultimate stress
D.	elastic limit
Answer» D. elastic limit

Discussion

14.	A thin spherical shell of diameter () and thickness () is subjected to an internal pressure (). The stress in the shell material is
A.	/
B.	/2
C.	/4
D.	/8
Answer» D. /8

Discussion

15.	Rivets are generally specified by
A.	thickness of plates to be joined
B.	overall length
C.	shank diameter
D.	diameter of head
Answer» D. diameter of head

Discussion

16.	The shear force diagram fora cantilever beam of length and carrying a gradually varying load from zero at free end and 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

17.	When a bar of length , width and thickness is subjected to a pull of , its
A.	length, width and thickness increases
B.	length, width and thickness decreases
C.	length increases, width and thickness decreases
D.	length decreases, width and thickness increases
Answer» D. length decreases, width and thickness increases

Discussion

18.	A column of length () with both ends fixed may be considered as equivalent to a column of length __________ with both ends hinged.
A.	/8
B.	/4
C.	/2
Answer» D.

Discussion

19.	Strain is equal to (where = Original length, and δ = Change in length)
A.	/δ
B.	δ
C.	/
D.	.δ
E.	+ δ
Answer» C. /

Discussion

20.	A beam of -section is subjected to a shear force of . The maximum shear force will occur at the
A.	top of the section
B.	bottom of the section
C.	neutral axis of the section
D.	junction of web and flange
Answer» D. junction of web and flange

Discussion

21.	A simply supported beam '' of length , breadth and depth carries a central load . Another beam '' of the same dimensions carries a central load equal to 2 . The deflection of beam '' will be __________ as that of beam ''.
A.	one-fourth
B.	one-half
C.	double
D.	four times
Answer» D. four times

Discussion

22.	In the below figure, the point represents the maximum stress.
A.	True
B.	False
Answer» C.

Discussion

23.	According to Euler's column theory, the crippling load of a column is given by = π /. In the Euler's formula, the value of for a column with one end fixed and the other end free, is
A.	1/2
B.	1
C.	2
D.	4
Answer» E.

Discussion

24.	The bending moment diagram for a cantilever beam of length and carrying a gradually varying load from zero at the free end and per unit length at the fixed end is a parabolic curve.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

25.	In the below figure, the point represents
A.	elastic limit
B.	upper yield point
C.	lower yield point
D.	breaking point
Answer» D. breaking point

Discussion

26.	Two closely-coiled helical springs '' and '' of the same matenal, same number of turns and made from same wire are subjected to an axial load . The mean diameter of spring '' is double the mean diameter of spring ''. The ratio of deflections in spring '' to spring '' will be
A.	1/8
B.	1/4
C.	2
D.	4
Answer» B. 1/4

Discussion

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

Discussion

28.	A thin cylindrical shell of diameter () length () and thickness () is subjected to an internal pressure (). The longitudinal stress in the shell is
A.	/
B.	/2
C.	pd
D.	/4
E.	/6
Answer» D. /4

Discussion

29.	The bending moment diagram for a simply supported beam carrying a uniformly distributed load of per unit length, will be
A.	a horizontal line
B.	a vertical line
C.	an inclined line
D.	a parabolic curve
Answer» E.

Discussion

30.	The bending moment at the centre of a simply supported beam with a gradually varying load from zero at both ends to per metre at the centre is /4.
A.	Yes
B.	No
Answer» C.

Discussion

31.	In a thick cylindrical shell subjected to an internal pressure (), the tangential stress is always a tensile stress where as the radial stress is a compressive stress
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

32.	A simply supported beam of length is loaded with a uniformly distributed load of per unit length. The maximum deflection is and lies at the centre of the beam.
A.	True
B.	False
Answer» B. False

Discussion

33.	In a thick cylindrical shell subjected to an internal pressure (), the tangential stress across the thickness of a cylinder is
A.	maximum at the outer surface and minimum at the inner surface
B.	maximum at the inner surface and minimum at the outer surface
C.	maximum at the outer surface and zero at the inner surface
D.	maximum at the inner surface and zero at the outer surface
Answer» C. maximum at the outer surface and zero at the inner surface

Discussion

34.	For the beam shown in the below figure, the shear force diagram between and is
A.	a horizontal line
B.	a vertical line
C.	an inclined line
D.	a parabolic curve
Answer» E.

Discussion

35.	A shaft revolving at ω rad / s transmits torque () in N-m. The power developed is
A.	.ω watts
B.	2 π Tω watts
C.	watts
D.	watts
Answer» B. 2 π Tω watts

Discussion

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

Discussion

37.	The maximum bending moment for a simply supported beam with a gradually varying load from zero at both ends and per metre at the centre, lies at the centre of a beam.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

38.	When a bar of length , width and thickness is subjected to a push of , its
A.	length, width and thickness increases
B.	length, width and thickness decreases
C.	length increases, width and thickness decreases
D.	length decreases, width and tickness increases
Answer» E.

Discussion

39.	In the below figure, Hook's law holds good, for the portion from to .
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

40.	A closely coiled helical spring is of mean diameter () and spring wire diameter (). The spring index is the ratio of
A.	1/
B.	1/
C.	/
D.	/
Answer» D. /

Discussion

41.	A simply supported beam of length carries a point load at a point as shown in the below figure. The maximum deflection lies at
A.	point
B.	point
C.	point
D.	between points
E.	and
Answer» E. and

Discussion

42.	In the below figure, curve represents soft brass.
A.	True
B.	False
Answer» C.

Discussion

43.	The shear force in the centre of a simply supported beam carrying a uniformly distributed load of per unit length, is
A.	zero
B.	/2
C.	/4
D.	/8
Answer» B. /2

Discussion

44.	The maximum bending moment of a cantilever beam of length and carrying a uniformly distributed load of per unit length lies at the middle of its length.
A.	True
B.	False
Answer» C.

Discussion

45.	A circular shaft fixed at, has diameter for half of its length and diameter /2 over the other half, as shown in the below figure. If the rotation of relative to is 0.1 radian, the rotation of relative to will be
A.	0.4 radian
B.	0.8 radian
C.	1.6 radian
D.	3.2 radian
Answer» D. 3.2 radian

Discussion

46.	A shaft of diameter is subjected to a twisting moment () and a bending moment (). If the maximum bending stress is equal to maximum shear stress developed, then is equal to
A.	/2
B.	2
C.	4
Answer» B. 2

Discussion

47.	According to Euler's column theory, the crippling load of a column is given by = π /. In the Euler's formula, the value of for a column with one end fixed and the other end hinged, is 1/2.
A.	True
B.	False
Answer» B. False

Discussion

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

Discussion

49.	In a stress-strain diagram for mild steel, as shown in the below figure, the point represents
A.	elastic limit
B.	upper yield-point
C.	lower yield point
D.	breaking point
Answer» B. upper yield-point

Discussion

50.	In the below figure, the point represents upper yield point.
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

Explore topic-wise MCQs in Mechanical Engineering.

In a thick cylindrical shell subjected to an internal pressure (), the radial stress across the thickness of the cylinder is

In order to avoid tearing off the plate at an edge, the distance from the centre of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where = Diameter of rivet hole in mm)

In a cantilever beam of length subjected to a uniformly distributed load of per unit length, the maximum deflection lies at the fixed end.

According to Euler's column theory, the crippling load for a column of length () fixed at both ends is __________ the crippling load for a similar column hinged at both ends.

The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of per unit length is

For the beam shown in the below figure, the shear force at is equal to

According to Euler's column theory, the crippling load for a column of length () with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.

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

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In the below figure, the stress corresponding to point is

A thin spherical shell of diameter () and thickness () is subjected to an internal pressure (). The stress in the shell material is

Rivets are generally specified by

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

When a bar of length , width and thickness is subjected to a pull of , its

A column of length () with both ends fixed may be considered as equivalent to a column of length __________ with both ends hinged.

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A beam of -section is subjected to a shear force of . The maximum shear force will occur at the

A simply supported beam '' of length , breadth and depth carries a central load . Another beam '' of the same dimensions carries a central load equal to 2 . The deflection of beam '' will be __________ as that of beam ''.

In the below figure, the point represents the maximum stress.

According to Euler's column theory, the crippling load of a column is given by = π /. In the Euler's formula, the value of for a column with one end fixed and the other end free, is

The bending moment diagram for a cantilever beam of length and carrying a gradually varying load from zero at the free end and per unit length at the fixed end is a parabolic curve.

In the below figure, the point represents

Two closely-coiled helical springs '' and '' of the same matenal, same number of turns and made from same wire are subjected to an axial load . The mean diameter of spring '' is double the mean diameter of spring ''. The ratio of deflections in spring '' to spring '' will be

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

A thin cylindrical shell of diameter () length () and thickness () is subjected to an internal pressure (). The longitudinal stress in the shell is

The bending moment diagram for a simply supported beam carrying a uniformly distributed load of per unit length, will be

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

In a thick cylindrical shell subjected to an internal pressure (), the tangential stress is always a tensile stress where as the radial stress is a compressive stress

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

In a thick cylindrical shell subjected to an internal pressure (), the tangential stress across the thickness of a cylinder is

For the beam shown in the below figure, the shear force diagram between and is

A shaft revolving at ω rad / s transmits torque () in N-m. The power developed is

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

The maximum bending moment for a simply supported beam with a gradually varying load from zero at both ends and per metre at the centre, lies at the centre of a beam.

When a bar of length , width and thickness is subjected to a push of , its

In the below figure, Hook's law holds good, for the portion from to .

A closely coiled helical spring is of mean diameter () and spring wire diameter (). The spring index is the ratio of

A simply supported beam of length carries a point load at a point as shown in the below figure. The maximum deflection lies at

In the below figure, curve represents soft brass.

The shear force in the centre of a simply supported beam carrying a uniformly distributed load of per unit length, is

The maximum bending moment of a cantilever beam of length and carrying a uniformly distributed load of per unit length lies at the middle of its length.

A circular shaft fixed at, has diameter for half of its length and diameter /2 over the other half, as shown in the below figure. If the rotation of relative to is 0.1 radian, the rotation of relative to will be

A shaft of diameter is subjected to a twisting moment () and a bending moment (). If the maximum bending stress is equal to maximum shear stress developed, then is equal to

According to Euler's column theory, the crippling load of a column is given by = π /. In the Euler's formula, the value of for a column with one end fixed and the other end hinged, is 1/2.

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

In a stress-strain diagram for mild steel, as shown in the below figure, the point represents

In the below figure, the point represents upper yield point.