Q.1
Venturimeter is used to
Q.2
Low specific speed of turbine implies it is
Q.3
Medium specific speed of turbine implies it is
Q.4
The centre of pressure acts __________ the centre of gravity of immersed surface.
Q.5
In a free nappe,
Q.6
The coefficient of discharge for an external mouthpiece depends upon
Q.7
The value of coefficient of discharge is __________ the value of coefficient of velocity.
Q.8
The pressure of a liquid measured with the help of a Piezometer tube is
Q.9
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre
Q.10
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a
Q.11
The fluid forces considered in the Navier Stokes equation are
Q.12
The tendency of a liquid surface to contract is due to the following property
Q.13
The pressure measured with the help of a Piezometer tube is in
Q.14
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be
Q.15
According to equation of continuity,
Q.16
The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
Q.17
The cavitation in a hydraulic machine
Q.18
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
Q.19
Hydraulic accumulator is used for
Q.20
The discharge over a triangular notch is
Q.21
The time oscillation of a floating body with increase in meatcentric height will be
Q.22
If the surface of liquid is convex, men
Q.23
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?
Q.24
In axial flow fans and turbines, fluid enters and leaves as follows
Q.25
During the opening of a valve in a pipe line, the flow is
Q.26
The vapour pressure over the concave surface is
Q.27
Falling drops of water become spheres due to the property of
Q.28
The equation of continuity holds good when the flow
Q.29
Pitot tube is used for measurement of
Q.30
The Reynold's number of a ship is __________ to its velocity and length.
Q.31
The velocity corresponding to Reynold number of 2000 is called
Q.32
The unit of viscosity is
Q.33
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is
Q.34
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)
Q.35
Principle of similitude forms the basis of
Q.36
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as
Q.37
The flow in a pipe or channel is said to be uniform when
Q.38
The pressure of the liquid flowing through the divergent portion of a Venturimeter
Q.39
The velocity of the liquid flowing through the divergent portion of a Venturimeter
Q.40
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
Q.41
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
Q.42
Euler's number is the ratio of __________ force to pressure force.
Q.43
The property of fluid by virtue of which it offers resistance to shear is called
Q.44
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
Q.45
The flow in which conditions do not change with time at any point, is known as
Q.46
A hydraulic coupling belongs to the category of
Q.47
A flow through a long pipe at constant rate is called
Q.48
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
Q.49
Head developed by a centrifugal pump is
Q.50
Delivery head of a centrifugal pump is
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