141. Flow of water in a pipe about 3 metres in diameter can be measured by

A.Orifice plate

B.Venturi

C.Rotameter

D.Pitot tube

142. True one-dimensional flow occurs when

A.The direction and magnitude of the veiocity at all points are identical

B.The velocity of successive fluid particles, at any point, is the same at successive periods of time

C.The magnitude and direction of the velocity do not change from point to point in the fluid

D.The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

143. An ideal flow, of any fluid must satisfy

A.Pascal law

B.Newton's law of viscosity

C.Boundary layer theory

D.Continuity equation

144. In the case of steady flow of a fluid, the acceleration of any fluid particle is

A.Constant

B.Variable

C.Zero

D.Zero under limiting conditions

145. Non uniform flow occurs when

A.The direction and magnitude of the velocity at all points are identical

B.Velocity, depth, pressure, etc. change from point to point in the fluid flow.

C.The magnitude and- direction of the velocity do not change from point to point in the fluid

D.The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

146. During the opening of a valve in a pipe line, the flow is

A.Steady

B.Unsteady

C.Uniform

D.Laminar

147. Uniform flow occurs when

A.The flow is steady

B.The flow is streamline

C.Size and shape of the cross section in a particular length remain constant

D.Size and cross section change uniformly along length

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