Q.1
Which of the following pump is successfully used for lifting water from deep wells?
Q.2
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.
Q.3
The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.
Q.4
Impulse turbine is generally fitted
Q.5
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will
Q.6
Meta-centric height is given as the distance between
Q.7
The speed of sound in a ideal gas varies directly as it’s
Q.8
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
Q.9
Non uniform flow occurs when
Q.10
The difference of pressure between the inside and outside of a liquid drop is
Q.11
Steady flow occurs when
Q.12
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
Q.13
Fluid is a substance that
Q.14
True one-dimensional flow occurs when
Q.15
The line of action of the buoyant force acts through the
Q.16
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have
Q.17
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)
Q.18
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is
Q.19
The coefficient of viscosity may be determined by
Q.20
The region between the separation streamline and the boundary surface of the solid body is known as
Q.21
The horizontal component of buoyant force is
Q.22
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)
Q.23
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)
Q.24
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
Q.25
Which of the following pump is suitable for small discharge and high heads?
Q.26
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
Q.27
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is
Q.28
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 speed of the wheel is
Q.29
An orifice is said to be large, if
Q.30
A flow in which __________ force is dominating over the viscosity is called turbulent flow.
Q.31
Which of the following meters is not associated with viscosity?
Q.32
Surface energy per unit area of a surface is numerically equal to
Q.33
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
Q.34
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
Q.35
Puck up the wrong statement about centrifugal pump
Q.36
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
Q.37
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
Q.38
To avoid an interruption in the flow of a siphon, an air vessel is provided
Q.39
Normal depth in open channel flow is the depth of flow corresponding to
Q.40
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)
Q.41
A flow whose streamline is represented by a curve, is called
Q.42
For measuring flow by a Venturimeter, if should be installed in
Q.43
The maximum discharge over a broad crested weir is
Q.44
In a centrifugal pump, the liquid enters the pump
Q.45
The ratio of the inertia force to the __________ is called Euler's number.
Q.46
Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)
Q.47
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
Q.48
The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
Q.49
The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
Q.50
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.
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