HYDRAULICS & FLUID MECHANICS QUIZ

The resultant of all normal pressures acts

at center of pressure

at metacentre

at e.g. of body

vertically upwards

TRUE ANSWER : ?
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

(i) and (ii)

(i)and(iv)

(ii) and (iv)

(ii) and (iii)

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Micro-manometer

Pirani Gauge

Bourdon tube

ionisastion gauge

TRUE ANSWER : ?
YOUR ANSWER : ?

The line of action of the buoyant force acts through the

center of gravity of any submerged body

centroid of the volume of fluid vertically above the body

center of the volume of floating body

centriod of the displaced volume of fluid

TRUE ANSWER : ?
YOUR ANSWER : ?

An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

9.81 m/sec²

10m/sec²

10.2/m sec

9.75 m/sec²

TRUE ANSWER : ?
YOUR ANSWER : ?

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

H

H3/2

H1/2

H5/2

TRUE ANSWER : ?
YOUR ANSWER : ?

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

surface tension

cohesion

viscosity

friction

TRUE ANSWER : ?
YOUR ANSWER : ?

Separation of flow occurs when

the pressure intensity reaches a minimum

the cross-section of a channel is reduced

All of these

the boundary layer comes to rest

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Venturimeter

rotameter

pitot tube

Orifice plate

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Pirani Gauge

Micro-manometer

ionisastion gauge

Bourdon tube

TRUE ANSWER : ?
YOUR ANSWER : ?

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