| In a venturi-flume, the flow takes place at |
A) Atmospheric pressure
B) Gauge pressure
C) Absolute pressure
D) None of these
| A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the |
A) Kinetic head
B) Velocity head
C) Manometric head
D) Static head
| An impulse turbine is used for |
A) Low head of water
B) High head of water
C) Medium head of water
D) High discharge
| In an immersed body, centre of pressure is |
A) At the centre of gravity
B) Above the centre of gravity
C) Below be centre of gravity
D) Could be above or below c.g., depending on density of body and liquid
| Reynold’s number is the ratio of the inertia force to the |
A) Surface tension force
B) Viscous force
C) Gravity force
D) Elastic force
| The hydraulic mean depth or the hydraulic radius is the ratio of |
A) Area of flow and wetted perimeter
B) Wetted perimeter and diameter of pipe
C) Velocity of flow and area of flow
D) None of these
| Piezometer is used to measure |
A) Pressure in pipe, channels etc.
B) Atmospheric pressure
C) Difference of pressure between two points
D) Very low pressures
| Hot wire anemometer is used to measure |
A) Pressure in gases
B) Liquid discharge
C) Pressure in liquids
D) Gas velocities
| A point, in a compressible flow where the velocity of fluid is zero, is called |
A) Critical point
B) Vena contracta
C) Stagnation point
D) None of these
| The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called |
A) Surface tension
B) Compressibility
C) Capillarity
D) Viscosity
