Hydrostatic Forces on Surfaces MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Hydrostatic Forces on Surfaces, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Hydrostatic Forces on Surfaces MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Hydrostatic Forces on Surfaces mcq questions that explore various aspects of Hydrostatic Forces on Surfaces problems. Each MCQ is crafted to challenge your understanding of Hydrostatic Forces on Surfaces principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Hydrostatic Forces on Surfaces MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Hydrostatic Forces on Surfaces. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Hydrostatic Forces on Surfaces MCQs | Page 2 of 6

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Q11.
By what factor will the hydrostatic force on one of the vertical sides of a beaker decrease if the height of the liquid column is halved?

a.

1 ⁄ 2

b.

1 ⁄ 3

c.

1 ⁄ 4

d.

2 ⁄ 3

Discuss
Answer: (c).1 ⁄ 4
Q12.
Equal volume of two liquids of densities ρ1 and ρ2 are poured into two identical cuboidal beakers. The hydrostatic forces on the respective vertical face of the beakers are F₁ and Fβ‚‚ respectively. If ρ1 > ρ2, which one will be the correct relation between F₁ and Fβ‚‚?

a.

F₁ > Fβ‚‚

b.

F₁ β‰₯ Fβ‚‚

c.

F₁ < Fβ‚‚

d.

F₁ ≀ Fβ‚‚

Discuss
Answer: (a).F₁ > Fβ‚‚
Q13.
Which of the following is the correct relation between centroid (G) and the centre of pressure (P) of a plane submerged in a liquid?

a.

G is always below P

b.

P is always below G

c.

G is either at P or below it.

d.

P is either at G or below it.

Discuss
Answer: (d).P is either at G or below it.
Q14.
A beaker contains water up to a height of h. What will be the location of the centre of pressure?

a.

h⁄3 from the surface

b.

h⁄2 from the surface

c.

2h⁄3 from the surface

d.

h⁄6 from the surface

Discuss
Answer: (c).2h⁄3 from the surface
Q15.
The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the water force (in kN) on the lamina?

a.

78

b.

118

c.

157

d.

196

Discuss
Answer: (c).157
Q16.
The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the depth (in m) of it’s centre of pressure?

a.

1.08

b.

1.58

c.

2.08

d.

2.58

Discuss
Answer: (c).2.08
Q17.
A square lamina (each side equal to 2m) is submerged vertically in water such that the upper edge of the lamina is at a depth of 0.5 m from the water surface. If the pressure on the surface is 12 bar, what will be the total water pressure (in kN) on the lamina?

a.

39

b.

59

c.

64

d.

71

Discuss
Answer: (c).64
Q18.
A container is filled with two liquids of densities ρ₁ and ρ₂ up to heights h₁ and hβ‚‚ respectively. What will be the hydrostatic force (in kN) per unit width of the lower face AB?

a.

ρ₂g(h₁ + hβ‚‚)

b.

ρ₂g(h₁ + \(\frac{h_2}{2}\))

c.

ρ₂g(\(\frac{ρ_1}{ρ_2}\)h₁ + \(\frac{h_2}{2}\))

d.

ρ₂g(\(\frac{ρ_1}{ρ_2}\)h₁ + \(\frac{h_2}{2}\))²

Discuss
Answer: (c).ρ₂g(\(\frac{ρ_1}{ρ_2}\)h₁ + \(\frac{h_2}{2}\))
Q19.
A cubic tank is completely filled with water. What will be the ratio of the hydrostatic force exerted on the base and on any one of the vertical sides?

a.

1:1

b.

2:1

c.

1:2

d.

3:2

Discuss
Answer: (b).2:1
Q20.
A rectangular lamina of width b and depth d is submerged vertically in water, such that the upper edge of the lamina is at a depth h from the free surface. What will be the expression for the depth of the centroid (G)?

a.

h

b.

h + d

c.

h + d ⁄ 2

d.

h + d / 2

Discuss
Answer: (c).h + d ⁄ 2
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