# Fluid Mechanics and Hydraulics Machines (3141906) MCQ

### MCQs of Flow Through Pipes

MCQ No - 1

#### The head loss through fluid flowing in the pipe due to friction is

(A) the minor loss
(B) the major loss
(C) both a. and b.
(D) none of the above

B
MCQ No - 2

#### Which property of the fluid accounts for the major losses in pipes?

(A) Density
(B) Specific gravity
(C) Viscosity
(D) Compressibility

C
MCQ No - 3

#### What is the Darcy-Weisbach formula for head loss due to friction? Where, f = Darcy's coefficient of friction

(A) $\frac{fL{V}^{2}}{gd}$
(B) $\frac{fL{V}^{2}}{2gd}$
(C) $\frac{4fL{V}^{2}}{2gd}$
(D) $\frac{16fL{V}^{2}}{2gd}$

C
MCQ No - 4

#### The friction factor in fluid flowing through a pipe depends upon

(A) Reynold's number
(B) relative roughness of pipe surface
(C) both a. and b.
(D) none of the above

C
MCQ No - 5

#### The frictional resistance for fluids in motion is

(A) proportional to the velocity in laminar flow and to the square of the velocity in turbulent flow
(B) proportional to the square of the velocity in laminar flow and to the velocity in turbulent flow
(C) proportional to the velocity in both laminar flow and turbulent flow
(D) proportional to the square of the velocity in both laminar flow and turbulent flow

A