Q.1
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
Q.2
In a depressed nappe
Q.3
Free surface of a liquid tends to contract to the smallest possible area due to force of
Q.4
A flow in which the viscosity of fluid is dominating over the inertia force is called
Q.5
When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
Q.6
Water is _________ liquid.
Q.7
Water is a __________ fluid.
Q.8
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.
Q.9
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
Q.10
The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)
Q.11
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
Q.12
A notch is used to measure __________ of liquids.
Q.13
When the Venturimeter is inclined, then for a given flow it will show __________ reading.
Q.14
The highest efficiency is obtained with a channel of __________ section.
Q.15
The factional resistance of a pipe varies approximately with __________ of the liquid.
Q.16
For 450 m head of water, _________ shall be used.
Q.17
The surface tension of mercury at normal temperature is __________ that of water.
Q.18
A flow through a long pipe at decreasing rate is called __________ uniform flow.
Q.19
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.
Q.20
Geometric similarity is said to exist between the model and the prototype, if both of them
Q.21
The sheet of water flowing over a notch or a weir is known as
Q.22
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
Q.23
The pressure in Pascal’s at a depth of 1 m below the free surface of a body of water will be equal to
Q.24
The intensity of pressure at any point, in a liquid, is
Q.25
The hydraulic efficiency of a reaction turbine, is the ratio of
Q.26
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
Q.27
Which of the following pump is successfully used for lifting water to the turbines?
Q.28
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is
Q.29
Which of the following statement is correct as regard to water wheels?
Q.30
The kinematic viscosity is the
Q.31
The viscosity of water at 20°C is
Q.32
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)
Q.33
In a centrifugal pump casing, the flow of water leaving the impeller, is
Q.34
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
Q.35
The viscosity of water is __________ than that of mercury.
Q.36
The surface tension of mercury at normal temperature compared to that of water is
Q.37
Operation of McLeod gauge used for low pressure measurement is based on the principle of
Q.38
The flow ratio of Francis turbine is defined as the ratio of the
Q.39
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
Q.40
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if
Q.41
The jet ratio is defined as the ratio of the
Q.42
A double overhung Pelton wheel has
Q.43
A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by
Q.44
The specific speed (Ns) of a centrifugal pump is given by
Q.45
In an outward flow reaction turbine
Q.46
The normal stress is same in all directions at a point in a fluid
Q.47
Air vessels in reciprocating pump are used to
Q.48
The optimum value of vane exit angle for a centrifugal pump impeller is
Q.49
In an inward flow reaction turbine
Q.50
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water , the horse power required will be
0 h : 0 m : 1 s