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Viscosity of water is about _____________ times that of air at room temperature?
Related MCQs
A hydraulic ram acts as a/an __________ pump?
In fluid flow, the stagnation point is defined as a point, where the __________ is zero?
During ageing of fluid carrying pipes, the__________?
Creeping flow around a sphere is defined, when particle Reynolds number is__________?
Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure?
Which is not a variable head meter __________?
Power requirement of fans having constant wheel diameter varies __________ fan speed?
For a reciprocating pump, the indicator diagram is the graph between the__________?
Efficiency of power transmission (ε) through a circular pipe is given by (ht – hf)/ht, which has a maximum value of __________ percent?
A bed consists of particles of density 2000 kg/m3. If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is__________?
The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is__________?
In Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter?
Which of the following is an undesirable property of a manometric liquid ?
With a constant diameter impeller of a centrifugal pump __________?
Maintenance cost of a __________ pump for a particular duty is the least?
Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an __________?
N. second/m2 is__________?
The dimension of surface tension is__________?
Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will__________?
It is possible to integrate an automatic flow controller to a__________?
The unit of bulk modulus of elasticity for a liquid in S.I. unit is__________?
For flow past a flat plate, if „x‟ is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to__________?
Path followed by water jet issuing from the bottom of a water tank will be a__________?
Location of vena-contracta in an orificemeter does not depend upon the__________?
The maximum head that can be developed by a single impeller is __________ ft?
In case of Venturimeter, friction losses are about __________ percent of maximum velocity head?
Drag co-efficient in hindered settling is __________ that in free settling?
Working of a __________ pump characterises mixed flow?
Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?
If in a flow field, between any two points, then the flow must be__________?
Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively__________?
A gas (density = 1.5 kg/m3, viscosity = 2 × 10‒5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m3and viscosity of 3 × 10‒5kg/m.s flowing at 3 m/s will be__________?
Cd is always __________ Cc?
Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation ?
For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the wall of the pipe and the friction velocity ‘v’, and it follows a __________ relationship?
In case of a Rotameter, the density of the float material is __________ that of the liquid it replaces?
For the manometer set up shown in the figure, the pressure difference PA – PB is given by__________?
The capacity of an accumulator is the maximum__________?
In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity?
Boundary layer separation is characterised by one of the conditions given below, where ‘Re’ is the Reynolds number for the flow. Select the appropriate conditions ?
Fluid flow in a/an __________ is an example of pressure flow?
Slugging in a fluidised bed can be avoided by using__________?
Friction produced by the formation of wakes is called the __________ friction?
Reynolds number is the ratio of__________?
Cd for the orifice plate varies from __________?
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water interface? The balloon is of radius 0.1 m and is filled with air ?
Which of the following factors does not contribute to the pressure drop in a pipeline ?
Experimental study of laminar fluid flow through a circular tube was conducted by__________?
Cocks are used to control __________?
Hydraulic radius is the ratio of __________?
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the__________?
Viscosity of water is about _____________ times that of air at room temperature?
A. 15
B. 55
C. 155
D. 1050
Correct Answer:
55
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Last Updated:
March 10, 2019