288. Euler's equation for motion of liquids is based on the assumption that the

A.Flow is streamline

B.Flow takes place continuously

C.Flow is homogeneous and incompressible

D.Flow is turbulent

289. In case of a two dimensional flow the components of velocity are given by u= ax ;v = by, the streamlines will consist of a series of

A.Circular arcs

B.Parabolic arcs

C.Hyperbolic arcs

D.Elliptical arcs

290. In case of a two dimensional flow, if the components of vcelocity are given by u= ax ;v = by, the point where no motion occurs, is known as

A.Critical point

B.None of the above.

C.Stagnation point

D.Stationary point

291. As pump speed increases, its NPSH (net positive suction head) requirement

A.Increases

B.Decreases

C.Remains unaffected

D.May increase/decrease depending on other considerations

292. For pipe flows, at constant diameter, head is proportional to

A.Flow

B.(flow)2

C.(flow)3

D.1/flow

293. For pipe flow, at constant diameter, capacity is proportional to

A.1lhead

B.Head

C.Head3/2

D.Head2

294. Friction factor for pipes depends on

A.Rate of flow

B.All of the above.

C.Viscosity

D.Pipe roughness

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