HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

The dynamic viscosity of the liquid __________ with rise in temperature.

Decreases

Remain unaffected

Increases

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

According to equation of continuity,

a1v1 = a2v2

a1/v1 = a2/v2

w1a1 = w2a2

w1v1 = w2v2

TRUE ANSWER : ?
YOUR ANSWER : ?

In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.

Two-third

Equal to

One-third

Three-fourth

TRUE ANSWER : ?
YOUR ANSWER : ?

One cubic metre of water weighs

250 liters

1000 liters

100 liters

500 liters

TRUE ANSWER : ?
YOUR ANSWER : ?

The pitot tube is used to measure

static pressure

stagnation pressure

velocity at stagnation point

dynamic pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

Hydraulic accumulator is used for

Supplying energy when main supply fails

Accumulating oil

Supplying large quantities of oil for very short duration

Generally high pressures to operate hydraulic machines

TRUE ANSWER : ?
YOUR ANSWER : ?

The velocity distribution for laminar flow through a circular tube

is constant over the cross-section

varies linearly from zero at walls to maximum at centre

varies parabolically with maximum at the centre

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In a centrifugal pump casing, the flow of water leaving the

Radial

Axial

Centrifugal

Vortex

TRUE ANSWER : ?
YOUR ANSWER : ?

The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as

steady flow

uniform flow

turbulent flow

one dimensional flow

TRUE ANSWER : ?
YOUR ANSWER : ?

Choose the correct relationship

kinematicviscosity = dynamicviscosity x density

gravity = specific gravity x density

dynamicviscosity = kinematicviscosity x density

specific gravity = gravity x density

TRUE ANSWER : ?
YOUR ANSWER : ?