MCQs of Dimensional Analysis and Similarities (Fluid Mechanics and Hydraulic Machines - 3141906)

Showing 11 to 20 out of 31 Questions

11.

If force(F), length(L) & time(T) are the fundamental units, then the dimensional formula of mass is

12.

The principle of dimensional homogeneity implies that

(a)	only the dimensional quantities may be added or subtracted
(b)	only the variables with the same dimensions may be multiplied or divided
(c)	only the variables with the same dimensions may be added or subtracted
(d)	dimensions of the two sides of the equation may not be the same

13.

Which of the following equations is not dimensionally homogeneous? Consider standard symbols for quantities.

(a)	Force, $F = m \times a$
(b)	Head loss due to friction, $h_{f} = \frac{f L v^{2}}{2 g D}$
(c)	Torque, $T = F \times L$
(d)	None of the above

14.

The repeating variables in the dimensional analysis should

(a)	form the non-dimensional parameters among themselves
(b)	include the dependent variable
(c)	have two variables with the same dimensions
(d)	must contain jointly all the fundamental dimensions involved in the phenomenon

15.

Principles of similitude form the basis of

(a)	performing acceptance tests
(b)	comparing two identical types of equipment
(c)	comparing the similarity between design and actual equipment
(d)	designing and testing models so that the results can be worked out for the prototype

16.

A similitude is a concept applicable to the testing of

17.

All the parameters in similitude are described using

18.

Which among the following is not a criterion to achieve similitude?

19.

A model of with the same shape is known as

20.

Which among the following have similar fluid streamlines?

Showing 11 to 20 out of 31 Questions