Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Fluids and Their Properties

Showing 11 to 20 out of 30 Questions
1 2 3
11.
The force per unit length is the unit of
(a) surface tension
(b) compressibility
(c) capillarity
(d) viscosity
Answer:

Option (a)

12.
The variation in the volume of a liquid with the variation of pressure is called
(a) surface tension
(b) compressibility
(c) capillarity
(d) viscosity
Answer:

Option (b)

13.
The reciprocal of compressibility is known as
(a) Young’s modulus
(b) expansion index
(c) Bulk modulus
(d) compression index
Answer:

Option (c)

14.
When a small diameter tube is dipped in water, the water rises in the tube with an upward ……….. surface.
(a) flat
(b) concave
(c) parabolic
(d) convex
Answer:

Option (b)

15.
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
(a) it is easier to see through the glass tube
(b) glass tube is cheaper than a metallic tube
(c) it is not possible to conduct this experiment with any other tube
(d) all of the above
Answer:

Option (a)

16.
Mercury does not wet the glass. This is due to property of the liquid known as
(a) cohesion
(b) adhesion
(c) viscosity
(d) surface tension
Answer:

Option (d)

17.
With an increase in the size of tube, the rise of depression of liquid in the tube due to surface tension will
(a) decrease
(b) increase
(c) remain unchanged
(d) depend upon characteristics of liquid
Answer:

Option (a)

18.
A glass tube of small diameter (d) is dipped in the fluid. The height of rise or fall in the tube given by
(a) 4ρgdσ cosθ
(b) σ cosθ4ρgd
(c) 4σ cosθρgd
(d) ρgd4σ cosθ
Answer:

Option (c)

19.
Falling drops of water become sphere due to the property of
(a) surface tension of water
(b) compressibility of water
(c) capillarity of water
(d) viscosity of water
Answer:

Option (a)

20.
The intensity of pressure at any point, in a liquid, is
(a) directly proportional to the area of the vessel containing liquid
(b) directly proportional to the depth of liquid from the surface
(c) directly proportional to the length of the vessel containing liquid
(d) inversely proportional to the depth of liquid from the surface
Answer:

Option (b)

Showing 11 to 20 out of 30 Questions
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