A. Increase
B. Decrease
C. Remain unchanged
D. Increase or decrease depending on the pipe material
Correct Answer: Increase ✔
Last Updated: March 10, 2019
Related MCQs
- 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__________?
- Hydraulic radius is the ratio of __________?
- Cocks are used to control __________?
- The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the__________?
- For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be __________?
- A fluid (μ/ρ) = 0.01 cm2/sec is moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is __________ cm/sec?
- Reciprocating pumps compared to centrifugal pumps__________?
- Major loss in sudden contraction in pipe flow is due to __________?
- What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5) ?
- Bernoulli’s equation describes the __________?
- In case of laminar flow of fluid through a circular pipe, the__________?
- Baffles in mixing tanks are provided to__________?
- Flow measurement in an open channel is done by a/an __________?
- __________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline?
- Cp/Cv is termed as__________?
- A lubricant 100 times more viscous than water would have a viscosity (in Pa.s) ?
- Which of the following fluid forces are not considered in the Navier-Stoke’s equation ?
- In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is__________?
- If the head over the triangular notch is doubled, the discharge will increase by __________ times?
- Fanning equation is given by (ΔP/ρ) = 4f (L/D) (v2/2gc). It is applicable to __________ region flow?
- Two liquids manometer is used for measuring small pressure differences in__________?
- The simple Pitot tube measures the __________ pressure?
- __________ forces act on a particle moving through a stationary fluid?