The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is
0.0116 stoke
0.116 stoke
0.0611 stoke
0.611 stoke
Correct Answer :
A. 0.0116 stoke
Related Questions
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.
Equal to
Less than
More than
None of these
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.
1 %
1.5 %
2 %
2.5 %
The critical depth meter is used to measure
Velocity of flow in an open channel
Depth of flow in an open channel
Hydraulic jump
Depth of channel
A weir, generally, used as a spillway of a dam is
Narrow crested weir
Broad crested weir
Ogee weir
Submerged weir
The Francis formula for the discharge over Cipoletti weir is
1.84 LH1/2
1.84 LH
1.84 LH3/2
1.84 LH5/2
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
Less than
More than
Equal to
None of these
A structure, whose width is __________ the width of the channel, is called a flumed structure.
Less than
More than
Equal
None of these
According to equation of continuity,
w1a1 = w2a2
w1v1 = w2v2
a1v1 = a2v2
a1/v1 = a2/v2
A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used?
1 : 5
1 : 2.5
1 : 25
1 : √5
The hydraulic mean depth for a circular pipe of diameter (d) is
d/6
d/4
d/2
d
A notch is used to measure __________ of liquids.
Pressure
Discharge
Velocity
Volume
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
Less than
More than
Equal to
None of these
For pipes, turbulent flow occurs when Reynolds number is
Less than 2000
Between 2000 and 4000
More than 4000
Less than 4000
The pressure at a point 4 m below the free surface of water is
19.24 kPa
29.24 kPa
39.24 kPa
49.24 kPa
The sheet of water flowing over a notch or a weir is known as
Sill or crest
Nappe or vein
Orifice
None of these
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is
9,000 kg
13,500 kg
18,000 kg
27,000 kg
The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)
(2/3) Cd × L.√2g [H1 - Ha]
(2/3) Cd × L. √2g [H1 3/2 - Ha 3/2]
(2/3) Cd × L.√2g [H1 2 - Ha 2]
(2/3) Cd × L. √2g [H1 5/2 - Ha 5/2]
The pressure of a liquid measured with the help of a Piezometer tube is
Vacuum pressure
Gauge pressure
Absolute pressure
Atmospheric pressure
The flow in a pipe or channel is said to be non-uniform when
The liquid particles at all sections have the same velocities
The liquid particles at different sections have different velocities
The quantity of liquid flowing per second is constant
Each liquid particle has a definite path
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
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
Remains horizontal
Becomes curved
Falls on the front end
Falls on the back end
The dynamic viscosity of the liquid __________ with rise in temperature.
Remain unaffected
Increases
Decreases
None of these
The time oscillation of a floating body with increase in meatcentric height will be
Same
Higher
Lower
Lower/higher depending on weight of body
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2where m is equal to
0.405 + (0.003/H)
0.003 + (0.405/H)
0.405 + (H/0.003)
0.003 + (H/0.405)
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
Real fluid
Ideal fluid
Newtonian fluid
Non-Newtonian fluid
Liquids transmit pressure equally in all the directions. This is according to
Boyle's law
Archimedes principle
Pascal's law
Newton's formula
For pipes, laminar flow occurs when Reynolds number is
Less than 2000
Between 2000 and 4000
More than 4000
Less than 4000
When the flow parameters at any given instant remain same at every point, then flow is said to be
Quasi-static
Steady state
Laminar
Uniform
Kinematic viscosity is equal to
Dynamic viscosity/density
Dynamic viscosity × density
Density/dynamic viscosity
1/dynamic viscosity × density
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
Continuity equation
Bernoulli's equation
Pascal's law
Archimedess principle