The surface tension of mercury at normal temperature is __________ that of water.

Hydraulics and Fluid Mechanics in ME
The surface tension of mercury at normal temperature is __________ that of water.

Same as

None of these

Lower than

Higher than

Same as

None of these

Lower than

Higher than

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Are identical in shape, but differ only in size

Have identical velocities

None of these

Are equal in size and shape

Are identical in shape, but differ only in size

Have identical velocities

None of these

Are equal in size and shape

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Hydraulics and Fluid Mechanics in ME
Manometric head, in case of a centrifugal pump, is equal to

Work-done per kN of water Losses within the impeller

All of these

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe

Energy per kN at outlet of impeller Energy per kN at inlet of impeller

Work-done per kN of water Losses within the impeller

All of these

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe

Energy per kN at outlet of impeller Energy per kN at inlet of impeller

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Hydraulics and Fluid Mechanics in ME
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

V1 / (V1 - V2)

(V1 - V2) / V1

V1² / (V1² - V2²)

(V1² - V2²) / V1²

V1 / (V1 - V2)

(V1 - V2) / V1

V1² / (V1² - V2²)

(V1² - V2²) / V1²

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Hydraulics and Fluid Mechanics in ME
The continuity equation is connected with

Open channel/pipe flow

Steady/unsteady flow

Conservation of mass

Compressibility of fluids

Open channel/pipe flow

Steady/unsteady flow

Conservation of mass

Compressibility of fluids

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Hydraulics and Fluid Mechanics in ME
If the surface of liquid is convex, men

There is no cohesion pressure

Cohesion pressure is negligible

Cohesion pressure is decreased

Cohesion pressure is increased

There is no cohesion pressure

Cohesion pressure is negligible

Cohesion pressure is decreased

Cohesion pressure is increased

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME The surface tension of mercury at normal temperature is __________ that of water.

Hydraulics and Fluid Mechanics in ME Dynamic similarity is said to exist between the model and the prototype, if both of them

Hydraulics and Fluid Mechanics in ME Manometric head, in case of a centrifugal pump, is equal to

Hydraulics and Fluid Mechanics in ME If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

Hydraulics and Fluid Mechanics in ME The continuity equation is connected with

Hydraulics and Fluid Mechanics in ME If the surface of liquid is convex, men

Hydraulics and Fluid Mechanics in ME
The surface tension of mercury at normal temperature is __________ that of water.

Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Hydraulics and Fluid Mechanics in ME
Manometric head, in case of a centrifugal pump, is equal to

Hydraulics and Fluid Mechanics in ME
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

Hydraulics and Fluid Mechanics in ME
The continuity equation is connected with

Hydraulics and Fluid Mechanics in ME
If the surface of liquid is convex, men