If n = number of members andy = number of joints, then for a perfect frame, n =

Strength of Materials
If n = number of members andy = number of joints, then for a perfect frame, n =

(b)2j-l

j-2

2/-3

(d)3/-2

(b)2j-l

j-2

2/-3

(d)3/-2

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Strength of Materials
According to Lami's theorem

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

Three forces acting at a point can be represented by a triangle, each side being proportional to force

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

Three forces acting at a point can be represented by a triangle, each side being proportional to force

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Strength of Materials
The C.G. of a right circular solid cone of height h lies at the following distance from the base

h/6

h/2

h/4

J/3

h/6

h/2

h/4

J/3

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Strength of Materials
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

hyperbola

parabola

elliptical

catenary

hyperbola

parabola

elliptical

catenary

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Strength of Materials
In actual machines

mechanical advantage is greater than velocity ratio

mechanical advantage is less than velocity ratio

mechanical advantage is unity

mechanical advantage is equal to velocity ratio

mechanical advantage is greater than velocity ratio

mechanical advantage is less than velocity ratio

mechanical advantage is unity

mechanical advantage is equal to velocity ratio

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Strength of Materials
The co-efficient of friction depends upon

shape of the surfaces

area of contact

All of the listed here

nature of surfaces

shape of the surfaces

area of contact

All of the listed here

nature of surfaces

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Strength of Materials

Strength of Materials If n = number of members andy = number of joints, then for a perfect frame, n =

Strength of Materials According to Lami's theorem

Strength of Materials The C.G. of a right circular solid cone of height h lies at the following distance from the base

Strength of Materials A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

Strength of Materials In actual machines

Strength of Materials The co-efficient of friction depends upon

Strength of Materials
If n = number of members andy = number of joints, then for a perfect frame, n =

Strength of Materials
According to Lami's theorem

Strength of Materials
The C.G. of a right circular solid cone of height h lies at the following distance from the base

Strength of Materials
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

Strength of Materials
In actual machines

Strength of Materials
The co-efficient of friction depends upon