THEORY OF STRUCTURES QUIZ

A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised

All of these

Brass experiences compressive force

Steel experiences tensile force

Composite beam gets subjected to a couple

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A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm² is:

4.5 mm

5.5 mm

4.0 mm

5.0 mm

TRUE ANSWER : ?
YOUR ANSWER : ?

A body is said to be in equilibrium if

It moves vertically

None of these

It rotates about its C.G.

It moves horizontally

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A truss containing j joints and m members, will be a simple truss if

j = 3m – 2

m = 2j – 3

j = 2m – 3

m = 3j – 2

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YOUR ANSWER : ?

The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is

2

½

1½

1

TRUE ANSWER : ?
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The moment of inertia of a triangular section (height h, base b) about its base, is

bh²/12

b³h/12

b²h/12

bh³/12

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YOUR ANSWER : ?

Stress may be defined as

Force per unit area

None of these

Force per unit length

Force per unit volume

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.5

2.5

2.34

1.34

TRUE ANSWER : ?
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The locus of the moment of inertia about inclined axes to the principal axis, is

Parabola

Straight line

Circle

Ellipse

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A steel plate d × b is sandwiched rigidly between two timber joists each D × B/2 in section. The steel will be (where Young’s modulus of steel is m times that of the timber).

BD² + mbd²)/4D]

BD² + mbd²)/6D]

BD³ + mbd³)/6D]

BD² + mbd³)/4D]

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