True one-dimensional flow occurs when

A The direction and magnitude of the velocity 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

Correct Answer: The direction and magnitude of the velocity at all points are identical

Bissoy MCQ
#Mechanical Engineering #Hydraulics And Fluid Mechanics In ME

Related Questions

Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
A $$\frac{\partial }{{\partial {\text{s}}}} = 0$$
B $$\frac{\partial }{{\partial {\text{t}}}} = 0$$
C $$\frac{\partial }{{\partial {\text{s}}}} = {\text{constant}}$$
D $$\frac{\partial }{{\partial {\text{t}}}} = {\text{constant}}$$
Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.
A $$\frac{\partial }{{\partial {\text{t}}}} = 0$$
B $$\frac{\partial }{{\partial {\text{t}}}} = {\text{constant}}$$
C $$\frac{\partial }{{\partial {\text{s}}}} = 0$$
D $$\frac{\partial }{{\partial {\text{s}}}} = {\text{constant}}$$
The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the
A Length is shorter
B Throat diameter is more
C Sudden expansion of flow in the downstream occurs
D Distance between the throat and the inlet is more
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.
A Incompressible
B Compressible
C Viscous
D None of these
The velocity at which the flow changes from laminar flow to turbulent flow is called
A Critical velocity
B Velocity of approach
C Sub-sonic velocity
D Super-sonic velocity
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)
A 0.423 D
B 0.577 D
C 0.223 D
D 0.707 D
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
A Length of the pipe
B Diameter of the pipe
C Density of the fluid
D Velocity of the fluid
P occurs only when Q occurs, Q has occurred, Therefore
A P has not occurred
B P may have occurred
C P must have Occurred
D None of these
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is
A 1
B >1
C ∞
D ≥1

Next steps