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Mechanical Engineering
‣
Hydraulics and Fluid Mechanics
Comments
Question
One litre of water occupies a volume of
Options
A. 100 cm
3
B. 250 cm
3
C. 500 cm
3
D. 1000 cm
3
Correct Answer
1000 cm
3
Hydraulics and Fluid Mechanics problems
Search Results
1. In a depressed nappe
Options
A. the pressure below the nappe is atmospheric
B. the pressure below the nappe is negative
C. the pressure above the nappe is atmospheric
D. the pressure above the nappe is negative
Show Answer
Scratch Pad
Discuss
Correct Answer: the pressure below the nappe is negative
2. The maximum efficiency of transmission through a pipe is
Options
A. 50%
B. 56.7%
C. 66.67%
D. 76.66%
Show Answer
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Discuss
Correct Answer: 66.67%
3. In a free nappe,
Options
A. the pressure below the nappe is atmospheric
B. the pressure below the nappe is negative
C. the pressure above the nappe is atmospheric
D. the pressure above the nappe is negative
Show Answer
Scratch Pad
Discuss
Correct Answer: the pressure below the nappe is atmospheric
4. The centre of gravity of the volume of the liquid displaced is called
Options
A. centre of pressure
B. centre of buoyancy
C. metacentre
D. none of these
Show Answer
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Discuss
Correct Answer: centre of buoyancy
5. The discharge through a siphon spillway is
Options
A.
C
d
x
a
2
gH
B.
C
d
x
a
2
g
x
H
3/2
C.
C
d
x
a
2
g
x
H
2
D.
C
d
x
a
2
g
x
H
5/2
Show Answer
Scratch Pad
Discuss
Correct Answer:
C
d
x
a
2
gH
6. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where
w
= Specific weight of liquid, and
H
= Height of liquid)
Options
A.
wH
B.
wH
/2
C.
wH
2
/2
D.
wH
2
/3
Show Answer
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Discuss
Correct Answer:
wH
2
/2
7. A manometer is used to measure
Options
A. low pressure
B. moderate pressure
C. high pressure
D. atomospheric pressure
Show Answer
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Discuss
Correct Answer: high pressure
8. The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
Options
A. The bodies A and B have equal stability
B. The body A is more stable than body B
C. The body B is more stable than body A
D. The bodies A and B are unstable
Show Answer
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Discuss
Correct Answer: The body B is more stable than body A
9. The discharge over a right angled notch is (where
H
= Height of liquid above the apex of notch)
Options
A.
C
d
2
g
x
H
B.
C
d
2
g
x
H
3/2
C.
C
d
2
g
x
H
2
D.
C
d
2
g
x
H
5/2
Show Answer
Scratch Pad
Discuss
Correct Answer:
C
d
2
g
x
H
5/2
10. The weight per unit volume of a liquid at a standard temperature and pressure is called
Options
A. specific weight
B. mass density
C. specific gravity
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: specific weight
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