Q.1
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.
Q.2
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
Q.3
Fluid is a substance which offers no resistance to change of
Q.4
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is
Q.5
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called
Q.6
The flow in which each liquid particle has a definite path and their paths do not cross each other is called
Q.7
In case of flow through parallel pipes,
Q.8
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is
Q.9
In a Kaplan turbine runner, the numbers of blades are generally between
Q.10
In a Francis turbine runner, the numbers of blades are generally between
Q.11
A nozzle is generally made of
Q.12
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)
Q.13
The upper surface of a weir over which water flows is known is
Q.14
The unit discharge through the turbine is
Q.15
The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.
Q.16
Two dimensional flows occurs when
Q.17
In the case of steady flow of a fluid, the acceleration of any fluid particle is
Q.18
A streamline is defined as the line
Q.19
The two important forces for a floating body are
Q.20
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is
Q.21
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is
Q.22
The impeller of a centrifugal pump may have
Q.23
A structure, whose width is __________ the width of the channel, is called a flumed structure.
Q.24
Ratio of inertia force to elastic force is known as
Q.25
The conditions for the stable equilibrium of a floating body are
Q.26
A one dimensional flow is one which
Q.27
For very great pressures, viscosity of moss gases and liquids
Q.28
A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
Q.29
The Cipoletti weir is a __________ weir.
Q.30
The top of the weir over which the water flows is known as
Q.31
Metacentre is the point of intersection of
Q.32
A hydraulic ram is a device used to
Q.33
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
Q.34
Mercury does not wet glass. This is due to property of liquid known as
Q.35
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
Q.36
The tangential velocity of the water element having a free vortex is
Q.37
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is
Q.38
The purpose of a surge tank is
Q.39
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) is
Q.40
In open channels, the specific energy is the
Q.41
Center of buoyancy is the
Q.42
Bernoulli equation deals with the law of conservation of
Q.43
The hydraulic mean depth for a circular pipe of diameter (d) is
Q.44
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called
Q.45
Liquids
Q.46
The discharge through a channel of rectangular section will be maximum, if
Q.47
A balloon lifting in air follows the following principle
Q.48
The volume of a fluid __________ as the pressure increases.
Q.49
The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is
Q.50
A weir, generally, used as a spillway of a dam is
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