Q.1
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be
Q.2
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be
Q.3
Reynold's number is the ratio of the inertia force to the
Q.4
The divergent portion of a Venturimeter is made longer than convergent portion in order to
Q.5
Indicator diagram of a reciprocating pump is a graph between
Q.6
Flow occurring in a pipeline when a valve is being opened is
Q.7
Francis turbine is best suited for
Q.8
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies
Q.9
The ratio of the inertia force to the viscous force is called
Q.10
The shear stress-strain graph for a Newtonian fluid is a
Q.11
The velocity at which the laminar flow stops, is known as
Q.12
Property of a fluid by which its own molecules are attracted is called
Q.13
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
Q.14
The property of a fluid which enables it to resist tensile stress is known as
Q.15
The units of kinematic viscosity are
Q.16
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)
Q.17
Cavitation is caused by
Q.18
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
Q.19
The pressure of fluid due to hammer blow is
Q.20
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to
Q.21
The loss of pressure head in case of laminar flow is proportional to
Q.22
In a centrifugal pump, the regulating valve is provided on the
Q.23
Piezometer is used to measure
Q.24
Differential manometer is used to measure
Q.25
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
Q.26
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.
Q.27
Axial flow pump is started with its delivery valve
Q.28
Centrifugal pump is started with its delivery valve
Q.29
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to
Q.30
An air vessel is provided at the summit in a siphon to
Q.31
In a free vortex motion, the radial component of velocity everywhere is
Q.32
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)
Q.33
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
Q.34
A fluid in equilibrium can't sustain
0 h : 0 m : 1 s