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WorksheetsHydraulics MCQ Practice Questions
Total questions: 40
Worksheet time: 20mins
Which of the following is NOT a property of a fluid?
Viscosity
Compressibility
Density
Conductivity
The pressure exerted by a fluid at rest is called:
Dynamic Pressure
Atmospheric Pressure
Static Pressure
Vapour Pressure
Which of the following instruments is used to measure atmospheric pressure?
U-tube Manometer
Bourdon Gauge
Simple Mercury Barometer
Pitot Tube
Which device is suitable to measure small pressure differences between two points?
Bourdon Gauge
Differential Manometer
Barometer
Vacuum Gauge
Gauge pressure is equal to:
Absolute Pressure + Atmospheric Pressure
Absolute Pressure – Atmospheric Pressure
Atmospheric Pressure – Absolute Pressure
Static Pressure – Atmospheric Pressure
A piezometer tube is used to measure:
High Pressure
Negative Pressure
Very Low Pressure
Positive Pressure in liquids
Which of the following devices cannot measure vacuum pressure?
U-tube Manometer
Bourdon Gauge
Piezometer
Vacuum Gauge
Vacuum pressure is defined as:
Pressure above atmospheric pressure
Pressure measured with mercury
Pressure below atmospheric pressure
Sum of gauge and atmospheric pressure
The formula for pressure (P) in a static fluid column is given by:
P=ρgh
P=Fm
P=mgh
P=ρv
Which instrument uses the principle of balancing columns of liquid to measure pressure?
Barometer
Piezometer
U-tube Manometer
Bourdon Tube
Which one of the following is NOT a type of fluid flow?
Laminar Flow
Uniform Flow
Turbulent Flow
Steady Compression
Which energy is associated with the height of the fluid column?
Pressure Energy
Potential Energy
Kinetic Energy
Thermal Energy
The unit of pressure head is:
m/s
Pascal
Newton
Metres
Bernoulli’s theorem relates to the conservation of:
Mass
Energy
Momentum
Volume
In Bernoulli’s theorem, total energy of fluid includes:
Pressure head, frictional loss, kinetic head
Potential head, kinetic head, and pressure head
Static head, pressure drop, turbulence
Elevation head, friction head, and impact head
Venturimeter is used to measure:
Pressure of liquid
Velocity of liquid
Flow rate of fluid
Density of fluid
Orificemeter measures:
Static Pressure
Velocity
Flow Discharge
Viscosity
Which of the following flows is governed by streamlined motion of particles?
Uniform Flow
Steady Flow
Laminar Flow
Turbulent Flow
The energy due to motion of a fluid particle is called:
Kinetic Energy
Potential Energy
Static Energy
Surface Energy
The device that works on Bernoulli’s principle for measuring discharge through pipes is:
Bourdon Tube
Pitot Tube
Venturimeter
Manometer
An orifice is defined as an opening in a vessel through which the fluid:
Flows tangentially
Flows horizontally
Flows under pressure
Flows under atmospheric conditions
The term 'vena contracta' refers to:
Enlarged jet area at exit
Maximum pressure point
Minimum jet area after leaving the orifice
Pressure drop zone
Which hydraulic coefficient is the ratio of actual discharge to theoretical discharge?
Coefficient of contraction
Coefficient of velocity
Coefficient of discharge
Coefficient of friction
Formula for actual discharge through a mouthpiece under constant head is ___________
Qa = a × √(2gh)
Qa = a × √(2g)
Qa = Ah/t
Qa = At/h
Formula for theoretical discharge through orifice under constant head is __________
Qth = a × √(2gh)
Qth = a × √(2g)
Qth = Ah/t
Qth = At/h
A device used to measure atmospheric pressure using mercury is called
Manometer
Hydrometer
Barometer
Pyrometer
Atmospheric pressure at sea level is approximately __________
1 atmosphere
101.3 kPa
760 mm of Hg
All of them
The coefficient of discharge (C_d) of an orifice depends on ________
Density of fluid
Velocity of fluid
Diameter of the orifice
Type of pipe material
In orifices, practical applications include:
Velocity measurement
Pipe friction loss
Flow measurement in tanks
Energy dissipation
Unit of discharge is __________
m³/s
m/s
m²/s
No unit
Unit of specific volume is __________
N/m³
Kg/m³
m³/N
N
Discharge is given by __________
Q = Volume × Time
Q = Volume / Velocity
Q = Volume × Velocity
Q = Volume / Time
Area at one end of a pipe is 20 m² and velocity of flow at that end is 10 m/s. Area at the other end of the pipe is 50 m². What is the velocity at the other end?
5 m/s
4 m/s
10 m/s
2 m/s
During the flow of water through a Venturimeter, in which part is the pressure maximum and velocity lowest?
Divergent
Throat
Convergent
None
A piezometer tube is used to measure __________
Static pressure
Gauge pressure
Atmospheric pressure
Vacuum pressure
Mouthpieces are generally preferred over orifices when:
Low discharge is required
High accuracy is required
Large flow discharge is required
Air is entrained
Unit of mass density is
N/m³
kg/m³
m³/N
N
Unit of specific weight or weight density or unit weight is
N/m³
kg/m³
m³/N
N
If the length of mouthpiece is less than 2–3 times the diameter, it is termed as:
Long mouthpiece
Short mouthpiece
Bell mouthpiece
Tapered nozzle
Discharge is given by
Q = Area x Velocity
Q = area + velocity
Q = area x (velocity)²
Q = Velocity/area
