Rankine's theory of earth pressure assumes that the back of the wall is 

The change in any parameters of project due to change in any factor is called 

The direct cost of a project with respect to normal time is 

The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is 

In an internal focusing telescope. 

Who discovered electric generator? 

Select a suitable figure from the Answer Figures that would replace the question mark (?). 

The angle by which the forward tangent deflects from the back tangent of a curve is called