Free Printable 22CE301 Mechanics of materials

1.

A beam supported on more than two supports is called

a)

simply supported beam

b)

fixed beam

c)

overhanging beam

d)

continuous beam

2.

The compression test is carried on __________ materials.

a)

ductile

b)

brittle

c)

malleable

d)

plastic

3.

When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.

a)

Agree

b)

Disagree

4.

The bending stress in a beam is __________ bending moment

a)

equal to

b)

less than

c)

more than

d)

directly proportional to

5.

A rectangular beam of length l supported at its two ends carries a central point load W. The maximum deflection occurs

a)

at the ends

b)

at l/3 from both ends

c)

at the centre

d)

none of these

6.

A rectangular beam subjected to a bending moment is shown in the figure. The upper layer of the beam will be in tension.

a)

True

b)

False

7.

The bending moment at the ends of a simply supported beam will be zero.

a)

Yes

b)

No

8.

The bending moment on a section is maximum where shear force is

a)

minimum

b)

maximum

c)

changing sign

d)

zero

9.

Linear Strain is defined as

a)

Ratio of change in length to original length

b)

Elongation

c)

Decrease in length

d)

None of these

10.

2. Stress is

a)

External force

b)

Internal resistive force

c)

Axial force

d)

Radial force

11.

When force is acting parallel to surface then the corresponding stress is known as

a)

Shear Stress

b)

Tensile stress

c)

Compressive stress

d)

Direct stress

12.

Compressive Strain is

a)

Increase in length / original length

b)

Decrease in length / original length

c)

Change in volume / original volume

d)

All of the above

13.

Ratio of lateral strain to longitudinal strain is called

a)

Bulk Modulus

b)

Youngs Modulus

c)

Poision Ratio

14.

Longitudinal strain , $e_{lo}$ =

a)

$\delta l\$ / $l$

b)

$\delta l$

c)

$\delta l$ X $l$

d)

None of the above

15.

Poisson's ratio, $\mu$ =

a)

Volumetric strain/lateral strain

b)

Lateral strain /Longitudinal Strain

c)

Longitudinal strain/Lateral strain

d)

Volumetric strain / longitudianl strain

16.

Relation Between Modulus of Elasticity and Modulus of
Rigidity, is

a)

$E\ =\ 2C\left(1\ +\mu\ \right)$

b)

$E\ =\ 2C\ \left(1\ -\ \mu\right)$

c)

$E\ =\ C\left(\mu\right)$

d)

None of the above

17.

Relation Between Modulus of Elasticity and Bulk Modulus:

a)

$E\ =3k\ \left(1\ +2\ \mu\right)$

b)

$E\ =\ 3k\ \left(1-2\mu\right)$

c)

$E\ =\ 2k\ \left(\frac{\mu}{2}\right)$

d)

None of the above

18.

If Longitudinal strain is $2.5\ X\ 10^{-4}$ and lateral strain is $7.5\ X\ 10^{-5}$ , Then Poisson's ratio , $\mu$ =

a)

0.3

b)

0.1

c)

0.5

d)

5

19.

Which of the following are statically determinate beams?

a)

Only simply supported beams

b)

Cantilever, overhanging and simply supported

c)

Fixed beams

d)

Continuous beams

20.

A cantilever is a beam whose

a)

Both ends are supported either on rollers or hinges

b)

One end is fixed and other end is free

c)

Both ends are fixed

d)

Whose both or one of the end has overhang

21.

Point of contra-flexure is a

a)

Point where Shear force is maximum

b)

Point where Bending moment is maximum

c)

Point where Bending moment is zero

d)

Point where Bending moment=0 but also changes sign from positive to negative

22.

The shear force is zero at a section where the bending moment will be

a)

zero

b)

maximum

c)

minimum

d)

maximum or minimum

23.

For a simply supported beam with point load at centre, the bending moment will be maximum at

a)

left end

b)

right end

c)

both ends

d)

the middle of the beam

24.

For a beam subjected to a constant bending moment throughout its length

a)

The shear force at all sections is zero

b)

The shear force at all sections is constant

c)

The shear force varies linearly along the length of the beam

d)

none of the above

25.

A roller support in a beam

a)

Shear force is zero

b)

Bending moment is zero

c)

Bending moment is maximum

d)

Slope is zero

26.

Bending moment at any point is equal to the algebric sum of

a)

All verticle forces

b)

All horizantal forces

c)

Forces on either side of the point

d)

Moments of forces on either side of the point

22CE301 Mechanics of materials

Total questions: 26

Worksheet time: 20mins

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