Q.1
The equivalent diameter for flow through a rectangular duct of width B and height H is
Q.2
As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1
Q.3
Delivery of insufficient quantity of liquid by a pump may be caused by
Q.4
Design of the casing of centrifugal pump should be such as to minimise the
Q.5
Transition from laminar flow to turbulent flow is aided by the
Q.6
Capillary tube method of viscosity measurement is based on the
Q.7
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)
Q.8
In power law, ζ = A (du/dy)² + B , then the fluid is
Q.9
In deriving Bernoulli's equation, fluid is assumed to be
Q.10
Cp/Cv is termed as
Q.11
In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is
Q.12
Toothpaste is a
Q.13
Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
Q.14
Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.
Q.15
The ratio of actual discharge to theoretical discharge through an orifice is equal to
Q.16
As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)
Q.17
Choose the set of pressure intensities that are equivalent.
Q.18
A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now
Q.19
In frictional fluid flow, the quantity, P/ρ + V²/2gc + gz/gc, is
Q.20
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.
Q.21
A differential pressure cell is used for
Q.22
Schedule number of a pipe, which is a measure of its wall thickness, is given by
Q.23
Path followed by water jet issuing from the bottom of a water tank will be a
Q.24
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss
Q.25
Laminar flow is characterised by the nonexistence of
Q.26
The Prandtl mixing length is
Q.27
Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the
Q.28
The centre of pressure is
Q.29
For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of
Q.30
Specific speed of a centrifugal pump relates it with another pump having the
Q.31
Which of the following is not a dimension-less parameter?
Q.32
The continuity equation
Q.33
Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the
Q.34
Volume of liquid displaced by a floating body is equivalent to its
Q.35
Euler's equation of motion is a statement expressing
Q.36
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.
Q.37
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be
Q.38
The Stoke's stream function applies to the
Q.39
Turbine impeller
Q.40
Terminal velocity is
Q.41
A piezometer opening measures the __________ fluid pressure.
Q.42
The unit of velocity head is
Q.43
The continuity equation
Q.44
The friction factor is
Q.45
High specific speed of a pump implies that, it is a/an __________ pump.
Q.46
Low specific speed of a pump implies that, it is a/an __________ pump.
Q.47
Bernoulli's equation is not applicable, when the flow is
Q.48
Permanent pressure loss in a well designed venturimeter is about __________ percent of the venturi differential.
Q.49
The simple pitot tube measures the __________ pressure.
Q.50
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.
0 h : 0 m : 1 s