Solid Mechanics MCQS %MCQS on Mechanics of Solids

Solid Mechanics MCQS-1

270

Created on July 03, 2021

SOLID MECHANICS MCQS 1

Solid Mechanics MCQS

1 / 15

Failure of riveted joints is due to

1. Tearing of the plates between the rivet hole and the edge of the plate

2. Tearing of plates between rivets

3. Shearing of rivets

4. All the above

2 / 15

A rectangular bar of width b and height h is being used as a cantilever. The loading is in a plane parallel to the side b. The section modulus is bh³/12

1. bh3/12

2. bh3/12

3. bh3/12

4. bh3/12

3 / 15

If a steel rod of 20 mm diameter and 5 metres long elongates by 2.275 mm when subjected to an axial pull of 3000 kg, the stress developed, is

1. 9.5541 kg/cm2

2. 95.541 kg/cm2

3. 955.41 kg/cm2

4. 9554.1 kg/cm2

4 / 15

Pick up the incorrect statement

1. Welded joints provide rigidity

2. Welding takes more time than riveting.

3. Welded joints have better finish

4. A welded joint develops strength of its parent metal

5 / 15

Two non-collinear parallel equal forces acting in opposite direction

1. Constitute a moment of couple

2. Constitute a moment

3. Constitute a couple

4. Balance each other

6 / 15

The shape of the bending moment diagram over the length of a beam, having no external load, is always

1. parabolic

2. circular.

3. linear

4. cubical

7 / 15

A three-hinged arch is said to be

1. statically determinate structure

2. statically indeterminate structure

3. a bent beam

4. none of these.

8 / 15

In a loaded beam, the point of contra flexure occurs at a section where

1. shearing force is maximum

2. bending moment is zero or changes sign

3. bending moment is maximum

4. bending moment is minimum

9 / 15

The ratio of elongations of a conical bar due to its own weight and that of a prismatic bar of the same length, is

1. 1/4

2. 1/3

3. 1/8

4. none of the above

10 / 15

The weakest section of a diamond riveting, is the section which passes through

1. central raw

2. second row

3. one rivet hole of end row.

4. first row

11 / 15

The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is

1. 3/8

2. 15/16

3. 1/16

4. 1/2

12 / 15

A simply supported wooden beam 150 cm long and having a cross section 16 cm × 24 cm carries a concentrated load, at the centre. If the permissible stress ft = 75 kg/cm2 and fs= 10 kg/cm2 the safe load is

1. 3050 kg

2. 3100 kg

3. 3075 kg

4. 3025 kg

13 / 15

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

1. equal to

2. none of these

3. more than

4. less than

14 / 15

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

1. At an angle equal to the angle of friction to the inclined plane

2. Along the plane

3. Vertically

4. Horizontally

15 / 15

If a constant section beam is subjected to a uniform bending moment throughout, its length bends to

1. A parabolic arc

2. A catenary

3. None of these

4. A circular arc

Your score is

The average score is 16%

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Solid Mechanics MCQS-2

YOUR WELCOME IN SOLID MECHANICS MCQS 2

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SOLID MECHANICS MCQS 2

1 / 15

The ratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire length, is

1. 2/5

2. 2/3

3. 1/5

4. 4/7

2 / 15

A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm². The depth of the beam is

1. 20 cm

2. 25 cm

3. 30 cm

3 / 15

The minimum number of rivets for the connection of a gusset plate, is

1. 4

2. 3

3. 2

4. 1

4 / 15

For a simply supported beam with a central load, the bending moment is

1. least at the supports

2. maximum at the supports

3. least at the centre

4. maximum at the centre

5 / 15

The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and

1. moment of inertia

2. polar modulus

3. polar moment of inertia

4. modulus of rigidly.

6 / 15

A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is

1. ML/2

2. M/3

3. M/2

4. M

7 / 15

For a given material Young's modulus is 200 GN/m² and modulus of rigidity is 80 GN/m². The value of Poisson's ratio is

1. 0.40

2. 0.20

3. 0.30

4. 0.25

8 / 15

A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is

1. 4s/bh

2. 3S/bh

3. 3b/bs

4. 4b/sh

9 / 15

In the cantilever truss as shown in below figure, the horizontal component of the reaction at A, is

1. 30 tonnes

2. 150 tonnes.

3. 90 tonnes

4. 60 tonnes

10 / 15

A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm². The depth of the beam is

1. 20 cm

2. 30 cm

3. 15 cm

4. 25 cm

11 / 15

The shape of the bending moment diagram over the length of a beam, having no external load, is always

1. parabolic

2. cubical

3. circular.

4. linear

12 / 15

If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint

1. one of the forces must be zero

2. forces must be equal and of the same sign

3. forces must be equal in magnitude but opposite in sign.

4. each force must be zero

13 / 15

If the shear force along a section of a beam is zero, the bending moment at the section is

1. maximum

2. average of maximum-minimum

3. zero

4. minimum

14 / 15

The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is

1. equal to 3π/16

2. equal to one

3. more than one

4. none of these.

15 / 15

The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is

1. 416

2. 360

3. 240

4. 500

The average score is 17%

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Solid Mechanics MCQS-3

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SOLID MECHANICS MCQS 3

1 / 15

The range within which a load can be applied on a rectangular column, to avoid any tensile stress, is

1. one-third of the base

2. one-half of the base

3. one-fifth of the base

4. one sixth of the base on either side of centroid.

2 / 15

If a rectangular beam measuring 10 x 18 x 400 cm carries a uniformly distributed load such that the bending stress developed is 100 kg/cm². The intensity of the load per metre length, is

1. 280 kg.

2. 250 kg

3. 270 kg

4. 260 kg

3 / 15

A shaft turning 150 r.p.m. is subjected to a torque of 150 kg.m Horse power transmitted by the shaft is

1. π2

2. π

3. 10 π

4. 1/π

4 / 15

The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is

1. one-quarter of the radius

2. one-fifth of the radius

3. one-sixth of the radius.

4. one-third of the radius

5 / 15

The force in member U₂L₂ of the truss shown in below figure, is

1. 10 T tension

2. zero

3. 15 T compression.

4. 10 T compression

6 / 15

When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called

1. truss frame.

2. grid frame

3. space frame

4. plane frame

7 / 15

Influence lines are drawn for structures

1. of any type

2. none of these.

3. pin-jointed truss

4. statically determinate

8 / 15

The deflection of any rectangular beam simply supported, is

1. inversely proportional to its width

2. directly proportional to the cube of its length

3. inversely proportional to the cube of its depth

4. directly proportional to its weight

9 / 15

A beam is said to be of uniform strength, if

1. bending stress is same throughout the beam

2. B.M. is same throughout the beam

3. shear stress is same throughout the beam

4. deflection is same throughout the beam

10 / 15

In a tension test, the yield stress is 300 kg/cm², in the octa hederal shear stress at the point is:

1. 100 2 kg/cm2

2. 150 2 kg/cm2

3. 250 2 kg/cm2.

4. 200 2 kg/cm

11 / 15

A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be

1. 5/8th the distributed load

2. distributed load.

3. half the distributed load

4. 3/8th the distributed load

12 / 15

The shear stress at any section of a shaft is maximum

1. at a distance r/2 from the centre

2. at a distance 3/4 r from the centre

3. at the top of the surface

4. at the top of the surface

13 / 15

If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by

1. 2

2. 1/8

3. 8

4. 1/2

14 / 15

For a simply supported beam of length L, the bending moment M is described as M = a (x - x³/L²), 0 ≤ x < L; where a is a constant. The shear force will be zero at

1. x = L/3

2. x = L/3

3. x = L/2

4. the supports

15 / 15

In a beam, the neutral plane

1. may be its centre

2. passes through the C.G. of the area of cross-section

3. does not change during deformation

4. none of these.

Your score is

The average score is 14%

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Solid Mechanics MCQS-4

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YOUR WELCOME IN SOLID MECHANICS MCQS 4

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SOLID MECHANICS MCQS 4

1 / 15

The direction of the reaction at support B of a truss shown in below figure will be

1. Vertical

2. West of South

3. West of South

4. East of North

2 / 15

A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end. If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of

1. 2

2. 1/8

3. 3

4. 1/2

3 / 15

An arch may be subjected to

1. thrust, shear force and bending moment.

2. bending moment and shear force

3. bending moment and axial force

4. shear force and thrust

4 / 15

The maximum resistance against rotation, is offered by the weld at a point

1. at either end

2. centrally located.

3. least distant

4. most distant

5 / 15

The force in DB of the truss shown in below figure is√

1. 4 W tension.

2. √W tension

3. √3 W compression

4. 2 W compression

6 / 15

The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2, the permissible maximum crippling load will be

1. 288.0

2. 12.88

3. 1.288 tonnes

4. 128.8 tonnes

7 / 15

The reaction at support A of the beam shown in below figure, is

1. 4 T.

2. zero

3. 10 T

4. 5 T

8 / 15

A simply supported beam of span L carries a uniformly distributed load W KN . The maximum bending moment M is

1. WL/8 KN

2. WL KN

3. WL/4 KN

4. WL/2 KN

9 / 15

Pick up the correct statement from the following

1. A rigid material has no plastic zone

2. A ductile material has large plastic zone

3. All the above.

4. A brittle material has no plastic zone

10 / 15

A reinforced concrete beam is assumed to be made of

1. heterogeneous material

2. isotropic material

3. none of these.

4. homogeneous material

11 / 15

In a three hinged arch, the shear force is usually

1. maximum at crown

2. maximum at springings

3. varies with slope.

4. maximum at quarter points

12 / 15

If a three hinged parabolic arch carries a uniformly distributed load on its entire span, every section of the arch resists.

1. tensile force

2. compressive force

3. shear force

4. bending moment.

13 / 15

The radius of gyration of a rectangular section is not proportional to

1. square root of the moment of inertia divided by area of the section

2. square root of the inverse of the area

3. none of these.

4. square root of the moment of inertia

14 / 15

The law which states, "within elastic limits strain produced is proportional to the stress producing it", is known as

1. Poisson's law

2. Stress law

3. Hooke's law

4. Bernoulli's law

15 / 15

The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called

1. breaking

2. yielding

3. none of these.

4. creeping

Your score is

The average score is 16%

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Solid Mechanics MCQS-5

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Python Programming Quiz

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Solid Mechanics MCQS

ByCivil Guru

Solid Mechanics MCQS-1

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Solid Mechanics MCQS-5

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