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Meyyappan PL

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20 questions

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- 1. Multiple Choice30 seconds1 pt
One litre of water occupies a volume of

100 cm

^{3}250 cm

^{3}500 cm

^{3}1000 cm

^{3} - 2. Multiple Choice30 seconds1 pt
The value of bulk modulus of a fluid is required to determine

Reynold's number

Froude's number

Mach number

Euler's number

- 3. Multiple Choice30 seconds1 pt
In one dimensional flow, the flow

is steady and uniform

takes place in straight line

takes place in curve

takes place in one direction

- 4. Multiple Choice30 seconds1 pt
The kinematic viscosity is the

ratio of absolute viscosity to the density of the liquid

ratio of density of the liquid to the absolute viscosity

product of absolute viscosity and density of the liquid

product of absolute viscosity and mass of the liquid

- 5. Multiple Choice30 seconds1 pt
The pressure less than atmospheric pressure is known as

suction pressure

vacuum pressure

negative gauge pressure

all of these

- 6. Multiple Choice30 seconds1 pt
The total energy line lies over the hydraulic gradient line by an amount equal to the

pressure head

velocity head

pressure head + velocity head

pressure head - velocity head

- 7. Multiple Choice30 seconds1 pt
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

neutral equilibrium

stable equilibrium

unstable equilibrium

none of these

- 8. Multiple Choice30 seconds1 pt
The power transmitted through a pipe is (where

*w*= Specific weight in N/m^{3}, and*Q*= Discharge in m^{3}/s)*w*x*Q*x*H**w*x*Q*x*h*_{f}*w*x*Q*(*H*-*h*_{f})*w*x*Q*(*H*+*h*_{f}) - 9. Multiple Choice30 seconds1 pt
**According to Archimede's principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body.**equal to

less than

more than

unpredictable

- 10. Multiple Choice30 seconds1 pt
**The component of the total force exerted by fluid on a body in the direction parallel to the direction of motion is called as**lift

drag

both a. and b.

none of the above

- 11. Multiple Choice30 seconds1 pt
**The fluid will rise in capillary when the capillary is placed in fluid, if**the adhesion force between molecules of fluid and tube is less than the cohesion between liquid molecules

the adhesion force between molecules of fluid and tube is more than the cohesion between liquid molecules

the adhesion force between molecules of fluid and tube is equal to the cohesion between liquid molecules

None of the above

- 12. Multiple Choice30 seconds1 pt
**What is an ideal fluid?**A fluid which has no viscosity

A fluid which is incompressible

A fluid which has no surface tension

All of the above

- 13. Multiple Choice30 seconds1 pt
The hydraulic mean depth or the hydraulic radius is the ratio of

area of flow and wetted perimeter

wetted perimeter and diameter of pipe

velocity of flow and area of flow

none of these

- 14. Multiple Choice30 seconds1 pt
When a body is placed over a liquid, it will float if

gravitational force is equal to the upthrust of the liquid

gravitational force is less than the upthrust of the liquid

gravitational force is more than the upthrust of the liquid

none of the above

- 15. Multiple Choice30 seconds1 pt
The discharge through a channel of trapezoidal section is maximum when

width of channel at the top is equal to twice the width at the bottom

depth of channel is equal to the width at the bottom

the sloping side is equal to half the width at the top

the sloping side is equal to the width at the bottom

- 16. Multiple Choice30 seconds1 pt
The tangential velocity of the water element having a free vortex is

directly proportional to its distance from the centre

inversely proportional to its distance from the centre

directly proportional to its (distance)

^{2}from the centreinversely proportional to its (distance)

^{2}from the centre - 17. Multiple Choice30 seconds1 pt
A venturiflume is used to measure

pressure of liquid

discharge of liquid

pressure difference between two points in a channel

pressure difference between two points in a pipe

- 18. Multiple Choice30 seconds1 pt
The metacentric height is the distance between the

centre of gravity of the floating body and the centre of buoyancy

centre of gravity of the floating body and the metacentre

metacentre and centre of buoyancy

original centre of buoyancy and new centre of buoyancy

- 19. Multiple Choice30 seconds1 pt
The coefficient of discharge for an external mouthpiece depends upon

velocity of liquid

pressure of liquid

area of mouthpiece

length of mouthpiece

- 20. Multiple Choice30 seconds1 pt
Select the wrong statement

An equivalent pipe is treated as an ordinary pipe for all calculations

The length of an equivalent pipe is equal to that of a compound pipe

The discharge through an equivalent pipe is equal to that of a compound pipe

The diameter of an equivalent pipe is equal to that of a compound pipe

- Answer choicesTagsAnswer choicesTags
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