A. Temperature remains constant
B. Compressibility is greater than zero
C. Density does not change with pressure & temperature
D. Is frictionless
Correct Answer: Density does not change with pressure & temperature ✔
Last Updated: March 10, 2019
Related MCQs
- 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__________?
- For steady ideal fluid flow, the Bernoulli’s equation states that the__________?
- Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?
- Purpose of air lift pump is to__________?
- 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__________?