A. For Reynolds number greater than 300
B. When there is no vortex formation
C. For unbaffled tank
D. None of these
Correct Answer: When there is no vortex formation ✔
Last Updated: March 10, 2019
Related MCQs
- To handle smaller quantity of fluid at higher discharge pressure, use a __________ pump?
- The discharge through a rectangular weir varies as __________?
- A Venturimeter measures the__________?
- In an incompressible flow of fluid, the fluid __________?
- An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic ?
- In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?
- Two piping system are said to be equivalent, when the __________ are same?
- Ratio of inertial forces to surface tension forces is called the __________ number?
- Normal depth in open channel flow is the depth of flow in the channel __________?
- Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) ?
- __________ flow means the flow of incompressible fluid with no shear ?
- Centrifugal pump can’t be used to pump __________?
- A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape?
- An ideal fluid is__________?
- __________ is an example of axial flow impeller?
- The distance between metacentre and __________ is called metacentric height?
- Enamels and paints are generally __________ fluid?
- A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be __________ metres?
- The Reynolds number for an ideal fluid flow is __________?
- For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance) ?
- The time of oscillation of a floating body is __________?
- The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid?
- Vane anemometer __________?
- Diaphragm valves are used for handling __________ fluids?
- Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm?
- Which of the following conditions must be satisfied for lift force to be developed ?
- Boundary layer separation is caused by the __________?
- A floating/submerged body is always stable, if its centre of gravity__________?
- Which of the following is dimensionless ?
- The distribution of shear stress in a stream of fluid in a circular tube is__________?
- The ratio of actual discharge to theoretical discharge through an orifice is equal to__________?
- The Prandtl mixing length is__________?
- In hindered settling, the particles are__________?
- The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration?
- The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by__________?
- Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a __________?
- The losses in open channel flow generally vary as the __________?
- The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids ?
- Potential function is applicable only for __________ flow?
- Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________?
- Which of the following flow measuring devices is an area meter ?
- Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?
- The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?
- The valve commonly used in pipes larger than 2″ dia is a__________?
- The ratio of maximum to average velocity in case of streamline flow between parallel plates is__________?
- At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?
- For the same terminal conditions and fitting size, the least friction loss is incurred in a/an ?
- Glass pipes can be joined by__________?
- The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
- Scale up of agitator design requires__________?
- The velocity for subsonic flow in a pipeline__________?