THEORY OF STRUCTURES QUIZ

A body is said to be in equilibrium if

None of these

It moves horizontally

It rotates about its C.G.

It moves vertically

TRUE ANSWER : ?
YOUR ANSWER : ?

A compound truss may be formed by connecting two simple rigid frames, by

Three bars

Three bars intersecting at a point

three parallel bars

Two bars

TRUE ANSWER : ?
YOUR ANSWER : ?

Slenderness ratio of a long column, is

Length of column divided by least radius of gyration

Radius of gyration divided by area of cross-section

Area of cross-section divided by least radius of gyration

Area of cross-section divided by radius of gyration

TRUE ANSWER : ?
YOUR ANSWER : ?

A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

[W (1 + f/ G)]/ A

(1 – g/f)/A

[W (2 + g/f)]/A

[W (2 + f/G)]/A

TRUE ANSWER : ?
YOUR ANSWER : ?

A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be,

13 M

16 m

15 M

14 M

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YOUR ANSWER : ?

A material is said to be perfectly elastic if

It regains its original shape partially on removal of the load

None of these

It regains its original shape on removal of the load

It does not regain its original shape at all

TRUE ANSWER : ?
YOUR ANSWER : ?

P = 4π² EI/L² is the equation of Euler's crippling load if

One end is fixed and other end is hinged

Both the ends are hinged

Both the ends are fixed

One end is fixed and other end is free

TRUE ANSWER : ?
YOUR ANSWER : ?

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

St. Venant's theory

Rankine's theory

Haig's theory

Guest's or Trecas' theory

TRUE ANSWER : ?
YOUR ANSWER : ?

A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson’s ratio is 0.25, the change in the volume of the bar is:

1.125 cm³

3.125 cm³

4.125 cm²

2.125 cm³

TRUE ANSWER : ?
YOUR ANSWER : ?

The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying

A uniformly distributed load ? per unit run over its right half span, is ? ?R/?

A distributed load varying from zero at the left end to ? per unit horizontal run at the right end, is ? ?R/?

A uniformly distributed load ? per unit run over its entire span is 4/3 ?R/?

All of these

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YOUR ANSWER : ?