25 AUGUST 2021 CURRENT AFFAIRS QUIZ

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(iv)

(i) and (ii)

(ii) and (iii)

(ii) and (iv)

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Metacentric height is given as the distance between

the center of gravity of the body andthe meta center

center of buoyancy and metacentre

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

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

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The units of viscosity are

kg sec/metre

newton-sec/metre2

newton-sec/metre

metre2/se

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

ionisastion gauge

Micro-manometer

Bourdon tube

Pirani Gauge

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A fluid is said to be ideal, if it is

inviscous and incompressible

inviscous and compressible

incompressible

inviscous

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A large Roynold number is indication of

highly turbulent flow.

LAMINAR FLOW

smooth and streamline flow

turbulent flow

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The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

1/4

2/3

1/2

1/3

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Specific weight of sea water is more that of pure water because it contains

dissolved air

All of these

dissolved salt

suspended matter

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Mercury is often used in barometer because

both (B) and (C)

its vapour pressure is so low that it may be neglected

the height of barometer will be less

it is the best liquid

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For a floating body to be in equilibrium

a righting couple should be formed

center of buoyancy and e.g. must lie on same vertical plane

meta center should be above e.g.

All of these

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