Related Questions

In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, $$l$$ = Span of the spring, n = Number of plates, b = Width of plates and t = Thickness of plates)
A $$\frac{{{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
B $$\frac{{3{\text{W}}l}}{{2{\text{nb}}{{\text{t}}^2}}}$$
C $$\frac{{2{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
D $$\frac{{3{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
Velocity at a certain point in case of streamline flow is
A Constant
B Independent of time
C Both A & B
D Neither A nor B
In case of coutte flow, the fluid flow is between two large flat parallel plates with
A Top plate moving and the bottom plate fixed
B Bottom plate moving and the top plate fixed
C Both the plates fixed
D Both the plates moving
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
A One
B Two
C Three
D Four
The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is
A 0.5
B 1
C 2
D 0.66
Velocity distribution for flow between two fixed parallel plates
A Varies parabolically across the section
B Is constant over the entire cross-section
C Is zero at the plates and increases linearly to the midplane
D None of these
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
What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition?
A 0.5
B 0.67
C 1
D 2
The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is
A $$\frac{1}{2}$$
B $$\frac{2}{3}$$
C $$\frac{3}{2}$$
D $$2$$
A flow whose streamline is represented by a curve, is called
A One-dimensional flow
B Two-dimensional flow
C Three-dimensional flow
D Four-dimensional flow

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