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.

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Hydrostatic Forces on Surfaces MCQs | Page 3 of 6

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Q21.
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.
Q22.
A beaker contains water up to a height of h. What will be the location of the centre of pressure?

a.

hโ„3 from the surface

b.

hโ„2 from the surface

c.

2hโ„3 from the surface

d.

hโ„6 from the surface

Discuss
Answer: (c).2hโ„3 from the surface
Q23.
A large tank of height h is filled with a liquid of density ฯ. A similar tank is half-filled with this liquid and other-halffi lled with another liquid of density 2ฯ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)

a.

2 : 3

b.

2 : โˆš3

c.

โˆš2 : 3

d.

โˆš2 : โˆš3

Discuss
Answer: (d).โˆš2 : โˆš3
Q24.
A large tank of height h is half-filled with a liquid of density ฯ and other half-filled with a liquid of density 4ฯ. A similar tank is half-filled with a liquid of density 2ฯ and other-half filled with another liquid of density 3ฯ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)

a.

1 : 1

b.

1 : 2

c.

2 : 1

d.

1 : 3

Discuss
Answer: (a).1 : 1
Q25.
A large tank is filled with three liquids of densities ฯ, 2ฯ and 3ฯ up to a height of h โ„ 3 each. What will be the expression for the instantaneous velocity of discharge through a small opening at the base of the tank? (assume that the diameter of the opening is negligible compared to the height of the liquid column)

a.

\(\sqrt{gh}\)

b.

\(\sqrt{2gh}\)

c.

\(2\sqrt{gh}\)

d.

\(4\sqrt{gh}\)

Discuss
Answer: (c).\(2\sqrt{gh}\)
Q26.
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
Q27.
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 โ„ 2

d.

h + d / 2

Discuss
Answer: (c).h + d โ„ 2
Q28.
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 centre of pressure?

a.

\(h + \frac{d}{3} × \frac{2h+d}{3h+2d}\)

b.

\(h + \frac{d}{6} × \frac{3h+2d}{h+2d}\)

c.

\(h + \frac{d}{3} × \frac{3h+2d}{2h+d}\)

d.

\(h + \frac{d}{3} × \frac{3h+2d}{h+d}\)

Discuss
Answer: (c).\(h + \frac{d}{3} × \frac{3h+2d}{2h+d}\)
Q29.
Does total pressure takes into the account force exerted by the fluid when it is in the dynamic motion?

a.

Yes

b.

No

c.

Depends on the conditions

d.

Depends on the type of Motion

Discuss
Answer: (b).No
Q30.
Can centre of pressure for a vertical plane submerged surface be ever be above centre of Gravity?

a.

Yes

b.

No

c.

It can be above in cases where the surface height is very large

d.

None of the mentioned

Discuss
Answer: (b).No
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