HYDRAULICS & FLUID MECHANICS QUIZ

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

1.01

0.95

0.611

0.86

TRUE ANSWER : ?
YOUR ANSWER : ?

The density of water is 1000 kg/m3 at

0°K

20°C

0°C

4°C

TRUE ANSWER : ?
YOUR ANSWER : ?

The line of action of the buoyant force acts through the centroid of the

volume of the floating body

volume of the fluid vertically above the body

displaced volume of the fluid

submerged body

TRUE ANSWER : ?
YOUR ANSWER : ?

THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

SAME AS BUOYANT FORCE

NEGLIGIBLE

None of these

ZERO

TRUE ANSWER : ?
YOUR ANSWER : ?

In a Sutro weir, the discharge is proportional to (where H is head)

H1/2

H

H5/2

H3/2

TRUE ANSWER : ?
YOUR ANSWER : ?

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

pitot tube

Venturimeter

rotameter

Orifice plate

TRUE ANSWER : ?
YOUR ANSWER : ?

According to Bernoulli’s equation for steady ideal fluid flow

principle of conservation of mass holds

velocity and pressure are inversely proportional

total energy is constant throughout

the energy is constant along a stream-line but may vary across streamlines

TRUE ANSWER : ?
YOUR ANSWER : ?

Pressure of the order of 10''' torr can be measured by

Micro-manometer

Pirani Gauge

ionisastion gauge

Bourdon tube

TRUE ANSWER : ?
YOUR ANSWER : ?

The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

uniform flow

frictionless flow

incompressible flow

steady flow

TRUE ANSWER : ?
YOUR ANSWER : ?

The flow which neglects changes in a transverse direction is known as

turbulent flow

steady flow

one dimensional flow

uniform flow

TRUE ANSWER : ?
YOUR ANSWER : ?

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