HYDRAULICS & FLUID MECHANICS QUIZ

The resultant of all normal pressures acts

vertically upwards

at e.g. of body

at center of pressure

at metacentre

TRUE ANSWER : ?
YOUR ANSWER : ?

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

turbulent flow

one dimensional flow

uniform flow

steady flow

TRUE ANSWER : ?
YOUR ANSWER : ?

Normal depth in open channel flow is the depth of flow corresponding to

laminar flow

unsteady flow

Steady flow

uniform flow

TRUE ANSWER : ?
YOUR ANSWER : ?

A perfect gas

is incompressible

is of theoretical interest

has constant viscosity

None of these

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YOUR ANSWER : ?

Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is

(ii) and (iv)

(i) and (ii)

(ii) and (iii)

(i)and(iv)

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YOUR ANSWER : ?

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

Bourdon tube

Micro-manometer

ionisastion gauge

Pirani Gauge

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bourdon tube

ionisastion gauge

Pirani Gauge

Micro-manometer

TRUE ANSWER : ?
YOUR ANSWER : ?

The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

2/3 R

1/3 R

3/4 R

1/2 R

TRUE ANSWER : ?
YOUR ANSWER : ?

Two pipe systems are said to be equivalent when

head loss and discharge are same in two systems

length and diameter are same in two systems

length of pipe and discharge are same in two systems

friction factor and length are same in two systems

TRUE ANSWER : ?
YOUR ANSWER : ?

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

more than the weight of the body

the weight of the body

weight of the fluid displaced by the body

less than the weight of the body

TRUE ANSWER : ?
YOUR ANSWER : ?

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