# Fluid Mechanics and Hydraulics Machines (3141906) MCQ

### MCQs of Static Forces on Surface and Buoyancy

MCQ No - 1

#### The total pressure on a horizontally immersed surface is

(A) $\rho gA$
(B) $\rho g\overline{h}$
(C) $\rho gA\overline{h}$
(D) none of the above

C
MCQ No - 2

#### The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

(A) $\rho gA$
(B) $\rho g\overline{h}$
(C) $\rho gA\overline{h}$
(D) $\frac{\rho gA\overline{h}}{\mathrm{sin}\theta }$

C
MCQ No - 3

#### The point at which the resultant pressure on an immersed surface acts is known as

(A) centre of pressure
(B) centre of gravity
(C) centre of depth
(D) centre of buoyancy

A
MCQ No - 4

(A) at
(B) above
(C) below
(D) same point

C
MCQ No - 5

#### When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the………of the two pressures.

(A) sum
(B) difference
(C) arithmetic mean
(D) geometric mean

B