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4

The product of mass and acceleration of flowing liquid is called

A. Inertia force

B. Viscous force

C. Gravity force

D. Pressure force

Correct Answer :

A. Inertia force


Related Questions

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4

The mass per unit volume of a liquid at a standard temperature and pressure is called

A. Specific weight

B. Mass density

C. Specific gravity

D. None of these

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4

The volumetric change of the fluid caused by a resistance is known as

A. Volumetric strain

B. Volumetric index

C. Compressibility

D. Adhesion

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4

The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

A. 0.8

B. 1

C. 1.2

D. 1.6

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4

Normal depth in open channel flow is the depth of flow corresponding to

A. Steady flow

B. Unsteady flow

C. Laminar flow

D. Uniform flow

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4

Stoke is the unit of

A. Kinematic viscosity in C. G. S. units

B. Kinematic viscosity in M. K. S. units

C. Dynamic viscosity in M. K. S. units

D. Dynamic viscosity in S. I. units

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4

If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

A. 51 cm

B. 50 cm

C. 52 cm

D. 52.2 cm

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4

The density of water is 1000 kg/m3 at

A. 0° C

B. 0° K

C. 4° C

D. 20° C

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4

The discharge through a siphon spillway is

A. Cd × a × √(2gH)

B. Cd × a × √(2g) × H3/2

C. Cd × a × √(2g) × H2

D. Cd × a × √(2g) × H5/2

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4

The buoyancy depends upon the

A. Weight of the liquid displaced

B. Pressure with which the liquid is displaced

C. Viscosity of the liquid

D. Compressibility of the liquid

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4

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

A. Notch

B. Weir

C. Mouthpiece

D. Nozzle

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4

The maximum discharge over a broad crested weir is

A. 0.384 Cd × L × H1/2

B. 0.384 Cd × L × H3/2

C. 1.71 Cd × L × H1/2

D. 1.71 Cd × L × H3/2

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4

Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

A. Adhesion

B. Cohesion

C. Viscosity

D. Compressibility

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4

A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

A. 1

B. 5

C. 7

D. 6

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4

Which of the following instrument can be used for measuring speed of a submarine moving in deep sea?

A. Venturimeter

B. Orifice plate

C. Hot wire anemometer

D. Pitot tube

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4

A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.

A. Equal to

B. Less than

C. More than

D. None of these

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4

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

A. Force of adhesion

B. Force of cohesion

C. Force of friction

D. Force of diffusion

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4

The pressure at a point in a fluid will not be same in all the directions when the fluid is

A. Moving

B. Viscous

C. Viscous and static

D. Viscous and moving

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4

The continuity equation is connected with

A. Open channel/pipe flow

B. Compressibility of fluids

C. Conservation of mass

D. Steady/unsteady flow

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4

The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

A. Directly proportional to (radius)2

B. Inversely proportional to (radius)2

C. Directly proportional to (radius)4

D. Inversely proportional to (radius)4

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4

The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

A. Equal to

B. Double

C. Three to four times

D. Five to six times

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4

If no resistance is encountered by displacement, such a substance is known as

A. Fluid

B. Water

C. Gas

D. Ideal fluid

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4

The hammer blow in pipes occurs when

A. There is excessive leakage in the pipe

B. The pipe bursts under high pressure of fluid

C. The flow of fluid through the pipe is suddenly brought to rest by closing of the valve

D. The flow of fluid through the pipe is gradually brought to rest by closing of the valve

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4

With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

A. Decrease

B. Increase

C. Remain unchanged

D. Depend upon the characteristics of liquid

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4

An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

A. Less than twice

B. More than twice

C. Less than three times

D. More than three times

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4

For pipes, turbulent flow occurs when Reynolds number is

A. Less than 2000

B. Between 2000 and 4000

C. More than 4000

D. Less than 4000

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4

The shear stress-strain graph for a Newtonian fluid is a

A. Straight line

B. Parabolic curve

C. Hyperbolic curve

D. Elliptical

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4

The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.

A. Less than

B. More than

C. Equal to

D. None of these

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4

The discharge through a channel of trapezoidal section is maximum when

A. Width of channel at the top is equal to twice the width at the bottom

B. Depth of channel is equal to the width at the bottom

C. The sloping side is equal to half the width at the top

D. The sloping side is equal to the width at the bottom

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4

The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

A. Less than

B. More than

C. Equal to

D. None of these

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4

The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

A. dQ/Q = 3/2 × (dH/H)

B. dQ/Q = 2 × (dH/H)

C. dQ/Q = 5/2 × (dH/H)

D. dQ/Q = 3 × (dH/H)