# Fluid Mechanics and Hydraulics Machines (3141906) MCQ

### MCQs of Dimensional Analysis and Similarities

MCQ No - 1

#### Which of the following statements are true for dimensional analysis?

(A) The functional relationship between dependent and non-dependent variables can be expressed into dimensionless terms by dimensional analysis.
(B) It is used to change the theoretical equation into a dimensionless form.
(C) It helps to convert the units of quantities from one system to another system.
(D) All of the above.

D
MCQ No - 2

#### Dimensional analysis is useful in

(A) checking the correctness of a physical equation
(B) determining the number of variables involved in a particular phenomenon
(C) determining the dimensionless groups from the given variables
(D) the exact formulation of a physical phenomenon

C
MCQ No - 3

#### The unit of a physical quantity which does not depend on the unit of any other physical quantity is called

(A) independent dimension
(B) fundamental dimension
(C) core dimension
(D) all of the above

B
MCQ No - 4

#### Which of the following is not a primary quantity?

(A) Mass
(B) Temperature
(C) Time
(D) None of the above

D
MCQ No - 5

#### What are the dimensions of force?

(A) ${M}^{1}{L}^{1}{T}^{-2}$
(B) ${M}^{1}{L}^{1}{T}^{-1}$
(C) ${M}^{1}{L}^{2}{T}^{-2}$
(D) ${M}^{1}{L}^{2}{T}^{2}$

A