Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Fluids and Their Properties

Showing 21 to 20 out of 30 Questions
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21.
The pressure intensity in N/m2 at any point in a liquid is
(a) ρg
(b) ρgh
(c) ρgh
(d) hρg
Answer:

Option (b)

22.
The pressure at a point 4 m below the free surface of water is
(a) 19.24 kPa
(b) 29.24 kPa
(c) 39.24 kPa
(d) 49.24 kPa
Answer:

Option (c)

23.
The height of a water column equivalent to a pressure of 0.15 MPa is
(a) 15.3 m
(b) 25.3 m
(c) 35.3 m
(d) 45.3 m
Answer:

Option (a)

24.
The pressure measured with reference to atmospheric pressure is called
(a) atmospheric pressure
(b) gauge pressure
(c) absolute pressure
(d) mean pressure
Answer:

Option (b)

25.
The atmospheric pressure at sea level is
(a) 103 kN/m2
(b) 10.3 m of water
(c) 760 mm of Hg
(d) all of these
Answer:

Option (d)

26.
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
(a) negative gauge pressure
(b) absolute pressure
(c) positive gauge pressure
(d) vacuum
Answer:

Option (c)

27.
The absolute pressure is equal to
(a) gauge pressure + atmospheric pressure
(b) gauge pressure - atmospheric pressure
(c) atmospheric pressure - gauge pressure
(d) gauge pressure - vacuum pressure
Answer:

Option (a)

28.
A piezometer tube is used only for measuring
(a) low pressure
(b) high pressure
(c) moderate pressure
(d) vacuum pressure
Answer:

Option (c)

29.
A differential manometer is used to measure
(a) atmospheric pressure
(b) pressure in channels
(c) pressure in venturimeter
(d) the difference of pressures between two points in a pipe
Answer:

Option (d)

30.
The liquid used in manometers should have
(a) low density
(b) high viscosity
(c) low surface tension
(d) high surface tension
Answer:

Option (c)

Showing 21 to 20 out of 30 Questions
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