Worksheetshydraulics
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
SI UNIT OF PRESSURE
a)
N/m2
b)
N/m
c)
N/m3
d)
Nm
2.
specific gravity of water
a)
1
b)
1000
c)
100
d)
10
3.
pressure at a point 5 m below the water surface
a)
49050 Pa
b)
51000 Pa
c)
50000 Pa
d)
48000 Pa
4.
density of mercury
a)
8.9 g/cm³
b)
10.5 g/cm³
c)
12.0 g/cm³
d)
13.6 g/cm³
5.
bernaullis theorem states that
a)
In a steady flow, pressure decreases with increasing velocity.
b)
The total energy in a fluid system is always increasing.
c)
Fluid velocity is constant along a streamline in all conditions.
d)
In a steady flow, the total mechanical energy along a streamline is constant.
6.
the head in terms of water corresponding to a pressure 1000 pascal is
a)
0.102 m
b)
0.300 m
c)
0.200 m
d)
0.050 m
7.
SI unit of discharge is
a)
cubic feet per second (ft³/s)
b)
gallons per hour (gal/h)
c)
liters per minute (L/min)
d)
cubic meters per second (m³/s)
8.
consider a pipe of varying diameter.THE VELOCITY AT A SECTION IN A PIPE OF DIAMETER .3 m IS 5 m/s.FIND THE VELOCITY AT A SECTION OF DIAMTER .6m
a)
1.25 m/s
b)
3.00 m/s
c)
2.50 m/s
d)
0.75 m/s
9.
Pascals law states that
a)
Pressure applied to a confined fluid is transmitted equally in all directions.
b)
Pressure in a fluid decreases with depth.
c)
Fluids at rest exert pressure only downward.
d)
Pressure is only transmitted through solid materials.
10.
venturimeter is used for
a)
measuring the flow rate of fluids
b)
analyzing the viscosity of solids
c)
calculating the pressure of gases
d)
determining the temperature of liquids
11.
venturimeter works on the principle of
a)
Newton's law of motion
b)
Bernoulli's principle
c)
Pascal's law
d)
Archimedes' principle
12.
differentiate steady and unsteady flow
a)
Steady flow is time-invariant; unsteady flow is time-variant.
b)
Steady flow is affected by pressure; unsteady flow is not influenced by time.
c)
Steady flow changes with time; unsteady flow remains the same.
d)
Steady flow is variable; unsteady flow is constant.
13.
Kinetic head of a fluid is
a)
The kinetic head of a fluid is represented by (g)/(v^2).
b)
The kinetic head of a fluid is defined as (p)/(ρg).
c)
The kinetic head of a fluid is given by (v^2)/(2g).
d)
The kinetic head of a fluid is calculated using (v)/(2p).
14.
venturimeter consists of three parts.what are they
a)
Converging section, throat, diverging section
b)
Expansion section, contraction section, measurement section
c)
Pressure gauge, flow meter, calibration section
d)
Inlet section, outlet section, control section
15.
center of pressure is
a)
The point where the total pressure force acts on a submerged surface.
b)
The location where buoyancy is maximized on a surface.
c)
The area where fluid velocity is highest around an object.
d)
The point where the weight of an object is balanced in water.
16.
equation of center of pressure
a)
h_cp = h_c + (A * h_c / I_g)
b)
h_cp = h_c + (I_g / (A * h_c))
c)
h_cp = h_c - (I_g / (A * h_c))
d)
h_cp = h_c + (I_g * A / h_c)
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