HYDRAULICS & FLUID MECHANICS QUIZ

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

frictionless flow

steady flow

uniform flow

incompressible flow

TRUE ANSWER : ?
YOUR ANSWER : ?

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

ionisastion gauge

Pirani Gauge

Micro-manometer

Bourdon tube

TRUE ANSWER : ?
YOUR ANSWER : ?

The resultant of all normal pressures acts

at metacentre

at center of pressure

vertically upwards

at e.g. of body

TRUE ANSWER : ?
YOUR ANSWER : ?

A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.0 M

4.2 M

4.6 M

4.8 M

TRUE ANSWER : ?
YOUR ANSWER : ?

The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

91 PA

981 PA

9810 PA

1 PA

TRUE ANSWER : ?
YOUR ANSWER : ?

Steady flow occurs when

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

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

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

1 : 5

1 : 2.5

1 :25

1:50

TRUE ANSWER : ?
YOUR ANSWER : ?

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

ionisastion gauge

Bourdon tube

Pirani Gauge

Micro-manometer

TRUE ANSWER : ?
YOUR ANSWER : ?

Metacentric height is given as the distance between

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

the center of gravity of the body andthe meta center

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

center of buoyancy and metacentre

TRUE ANSWER : ?
YOUR ANSWER : ?

If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is

between 1 and 100

less than 1

160

200

TRUE ANSWER : ?
YOUR ANSWER : ?