HYDRAULICS & FLUID MECHANICS QUIZ

Which of the following instrument can be used for measuring speed of an aeroplane

rotameter

Orifice plate

Venturimeter

pitot tube

TRUE ANSWER : ?
YOUR ANSWER : ?

Free surface of a liquid tends to contract to the smallest possible area due to force of

cohesion

friction

viscosity

surface tension

TRUE ANSWER : ?
YOUR ANSWER : ?

An open vessel of water is accelerated up an inclined plane. The free water surface will

any one of above is possible

be horizontal

make an angle in direction of inclination of inclined plane

make an angle in opposite direction to inclination of inclined plane

TRUE ANSWER : ?
YOUR ANSWER : ?

Metacentric height is given as the distance between

the center of gravity of the body andthe meta center

the center of gravity of the body and the center of pressure

center of buoyancy and metacentre

the center of gravity of the body and the center of buoyancy

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YOUR ANSWER : ?

The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

osmosis

surface tension

viscosity

co-efficient of viscosity

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YOUR ANSWER : ?

In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

33 M/SEC

40 M/SEC

22.5 M/SEC

50 M/SEC

TRUE ANSWER : ?
YOUR ANSWER : ?

Steady flow occurs when

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

the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

the direction and magnitude of the velocity at all points are identical

TRUE ANSWER : ?
YOUR ANSWER : ?

THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.86

0.611

1.01

0.95

TRUE ANSWER : ?
YOUR ANSWER : ?

The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

TURBULENT FLOW

NOT PREDICTABLE FROM THE GIVEN DATA

TRANSITION FLOW

LAMINAR FLOW

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YOUR ANSWER : ?

The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

H/2

2 H/3

H/3

2 H/5

TRUE ANSWER : ?
YOUR ANSWER : ?