Related Questions
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4
An air vessel is provided at the summit in a siphon to
A. Avoid interruption in the flow
D. Maintain pressure difference
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4
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called
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4
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
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4
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
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4
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm. The pressure at 2.5 m below the oil surface will be
A. 2 metres of water column
B. 3 metres of water column
C. 3.5 metres of water column
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4
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
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4
The time oscillation of a floating body with increase in meatcentric height will be
D. Lower/higher depending on weight of body
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4
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)
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4
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?
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4
In a forced vortex, the velocity of flow everywhere within the fluid is
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4
Choose the wrong statement
A. Fluids are capable of flowing
B. Fluids conform to the shape of the containing vessels
C. When in equilibrium, fluids cannot sustain tangential forces
D. When in equilibrium, fluids can sustain shear forces
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4
The flow in which each liquid particle has a definite path and their paths do not cross each other is called
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4
Ratio of inertia force to surface Jension is known as
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4
In order to avoid tendency of separation at throat in a Venturimeter, the ratio of the diameter at throat to the diameter of pipe should be
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4
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)
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4
The weight per unit volume of a liquid at a standard temperature and pressure is called
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4
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre
A. Coincides with its centre of gravity
B. Lies above its centre of gravity
C. Lies below its centre of gravity
D. Lies between the centre of buoyancy and centre of gravity
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4
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
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4
In open channels, the specific energy is the
A. Total energy per unit discharge
B. Total energy measured with respect to the datum passing through the bottom of the channel
C. Total energy measured above the horizontal datum
D. Kinetic energy plotted above the free surface of water
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4
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)
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4
The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.
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4
The intensity of pressure at any point, in a liquid, is
A. Directly proportional to the area of the vessel containing liquid
B. Directly proportional to the depth of liquid from the surface
C. Directly proportional to the length of the vessel containing liquid
D. Inversely proportional to the depth of liquid from the surface
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4
A streamline is defined as the line
A. Parallel to central axis flow
B. Parallel to outer surface of pipe
C. Of equal velocity in a flow
D. Along which the pressure drop is uniform
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4
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
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4
Two pipe systems can be said to be equivalent, when the following quantities are same
A. Friction loss and flow
D. Friction factor and diameter
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4
Froude's number is the ratio of inertia force to
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4
The flow in a pipe or channel is said to be uniform when
A. The liquid particles at all sections have the same velocities
B. The liquid particles at different sections have different velocities
C. The quantity of liquid flowing per second is constant
D. Each liquid particle has a definite path
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4
The Reynold's number of a ship is __________ to its velocity and length.
B. Inversely proportional
C. Square root of velocity
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4
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
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4
The purpose of a surge tank is
A. To control the pressure variations due to rapid changes in the pipe line flow
B. To eliminate water hammer possibilities
C. To regulate flow of water to turbines by providing necessary retarding head of water