Dimensional Analysis

What is a prototype?

• A small-scale replica

• Actual structure

• Theory structure.

• Adopted structure

The similarity between the motion of model and prototype is_________

• Dynamic similarity

• Potential similarity

• Kinematic similarity

• Design similarity

Ratio of inertia force to viscous force is known as

• Grashof number

• Reynolds number

• Peclet number

• Stanton number

Which of the following number is applicable in open hydraulic structure such as spillways, where gravitational force is predominant?

• Reynold's Number

• Euler's Number

• Weber's Number

• Froude's Number

Square root of the ratio of inertia force to elastic force is called as

• Reynold's Number

• Euler's Number

• Mach Number

• Froude's Number

Which dimensionless number has significant role in defining laminar and turbulent flow system

• Reynold's Number

• Euler's Number

• Mach Number

• Froude's Number

If there are n variables in a dimensionally homogeneous equation and if these variables contain m primary dimensions, then the variables can be grouped into how many non-dimensional parameters?

• m

• n-m

• m-2n

• n

Which of the following is not known as a core group( repeated variable)?

• Time

• Geometric property

• Fluid property

• Flow characteristics

If there are 7 variables in a dimensionally homogeneous equation and if these variables contain 4 primary dimensions, then the variables can be grouped into how many non-dimensional parameters?

• 3

• 4

• 5

• 7

If there are 7 variables in a dimensionally homogeneous equation and if these variables contain 4 primary dimensions, then number of repeated variables are

• 3

• 4

• 5

• 7