THEORY OF STRUCTURES QUIZ

The eccentricity (e) of a hollow circular column, external diameter 25 cm, internal diameter 15 cm for an eccentric load 100 t for non-development of tension, is

2.75 cm

3.50 cm

4.25 cm

3.00 cm

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The vertical reaction for the arch is

wa²/2l

wa/2l

wl/a

wa/l

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The ratio of shear stress and shear strain of an elastic material, is

Both A. and B.

Modulus of Elasticity

Shear Modulus

Modulus of Rigidity

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Principal planes are subjected to

Normal stresses only

None of these

Normal stresses as well as tangential stresses

Tangential stresses only

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The forces in the members of simple trusses, may be analysed by

Method of sections

Graphical method

All of these

Method of joints

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Maximum strain theory for the failure of a material at the elastic limit, is known as

St. Venant's theory

Haig's theory

Rankine's theory

Guest's or Trecas' theory

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A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm², the side of the rod, is

2 cm

2.5 cm

1 cm

1.5 cm

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Slenderness ratio of a long column, is

Radius of gyration divided by area of cross-section

Length of column divided by least radius of gyration

Area of cross-section divided by least radius of gyration

Area of cross-section divided by radius of gyration

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A shaft rotating N.R.M. under a torque T, transmits a power

/30 Newton metres/min

/60 Newton metres/min

/60 Newton metres/sec

/30 Newton metres/sec

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The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is

2

3

1

4

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