HYDRAULICS & FLUID MECHANICS QUIZ

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

Pirani Gauge

ionisastion gauge

Bourdon tube

Micro-manometer

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

H1/2

H5/2

H

H3/2

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THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

NEGLIGIBLE

SAME AS BUOYANT FORCE

ZERO

None of these

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The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

LAMINAR FLOW

TURBULENT FLOW

NOT PREDICTABLE FROM THE GIVEN DATA

TRANSITION FLOW

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When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

inversely as the square of the radial distance

linearly with radial distance

as the square of the radial distance

inversely as the radial distance

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Drag force is a function of i) projected area of the body ii) mass density of the fluid iii) velocity of the body The correct answer is

(i) and (ii)

(i) and (iii)

(i), (ii) and (iii)

(ii) and (iii)

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SURFACE TENSION HAS THE UNITS OF

NEWTONS/M

NEW TONS/M

NETON/M

NEWTONS

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For measuring flow by a venturimeter, if should be installed in

inclined line with upward flow

in any direction and in any location.

horizontal line

vertical line

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Two pipe systems are said to be equivalent when

friction factor and length are same in two systems

length of pipe and discharge are same in two systems

length and diameter are same in two systems

head loss and discharge are same in two systems

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Separation of flow occurs when

the cross-section of a channel is reduced

the boundary layer comes to rest

the pressure intensity reaches a minimum

All of these

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