1)

The assumption in the theory of bending of beams, is :

Civil Engineering

A)

material is homogeneous

B)

material is isotropic

C)

Young's modulus is same in tension as well as in compression

D)

each layer is independent to expand or to contract

E)

all the above.

2)

The shape factor of standard rolled beam section varies from

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A)

1.10 to 1.20

B)

1.20 to 1.30

C)

1.30 to 1.40

D)

1.40 to 1.50

3)

Shear strain energy theory for the failure of a material at elastic limit, is due to

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A)

Rankine

B)

Guest or Trecas

C)

St. Venant

D)

Haig

E)

Von Mises

4)

The point of contraflexure is the point where

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A)

B.M. changes sign

B)

B.M. is maximum

C)

B.M. is minimum

D)

S.F. is zero.

5)

The normal component of a force inclined through θ° is obtained by multiplying the force by

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A)

sin θ

B)

cos θ

C)

tan θ

D)

sin θ cos θ

6)

Stress may be defined as

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A)

force per unit length

B)

force per unit volume

C)

force per unit area

D)

none of these.

7)

Total strain energy theory for the failure of a material at elastic limit, is known

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A)

Guest's or Trecas' theory

B)

St. Venant's theory

C)

Haig's theory

D)

Rankine's theory

8)

Stress may be expressed in Newtons

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A)

per millimetre square \( {N \over mm^2}\)

B)

per centimetre square \(N\over cm2\)

C)

per metre square \( N \over m2\)

D)

All of the above.

9)

Principal planes are subjected to

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A)

normal stresses only

B)

tangential stresses only

C)

normal stresses as well as tangential stresses

D)

none of these

10)

In plastic analysis, the shape factor for a circular section, is

Civil Engineering

A)

1.5

B)

1.6

C)

1.7

D)

1.75