HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

When an ideal fluid flows past a sphere

highest intensity of pressure occurs around the circumference at right angles to flow

total drag is zero

lowest pressure intensity occurs at rear stagnation point

lowest pressure intensity occurs at front stagnation point

TRUE ANSWER : ?
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Stream lines and path lines always coincide in case of

turbulent flow

uniform flow

laminar flow

steady flow

TRUE ANSWER : ?
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A Francis turbine is used when the available head of water is

0 to 25 m

Above 250 m

None of these

25 m to 250 m

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If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

H = Hg/hf

H = Hg + hf

H = Hg - hf

H = Hg × hf

TRUE ANSWER : ?
YOUR ANSWER : ?

Medium specific speed of turbine implies it is

Impulse turbine

Any one of the above

Propeller turbine

Francis turbine

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The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

0.6

0.5

0.8

0.4

TRUE ANSWER : ?
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For manometer, a better liquid combination is one having

surface tension is no criterion

lower surface tension

high density and viscosity

higher surface tension

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The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called

Buoyancy

Reaction

Up-thrust

Metacentre

TRUE ANSWER : ?
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The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Stream line

Potential line

Path line

Steak line

TRUE ANSWER : ?
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Medium specific speed of a pump implies it is

Mixed flow pump

Centrifugal pump

Axial flow pump

Any one of the above

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