HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

Center of pressure compared to e.g. is

Below it

Above or below depending on area of body

At same point

Above it

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A fluid having no viscosity is known as

Non-Newtonian fluid

Ideal fluid

Real fluid

Newtonian fluid

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An ideal flow of any fluid must fulfill the following

Newton’s law of viscosity

Continuity equation

Pascal’ law

Newton’s law of motion

TRUE ANSWER : ?
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The flow in a pipe is neither laminar nor turbulent when Reynold number is

More than 2800

Between 2000 and 2800

Less than 2000

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The units of kinematic viscosity are

newton-sec per meter

newton-sec per meter

kg sec/meter

metres² per sec

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The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Difference

Sum

Product

None of these

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Which of the following is used to measure the discharge ?

venturimeter

pitot tube

current meter

hotwire anemometer

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The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

(v₁² - v₂²)/2g

(v₁ - v₂)²/2g

(v₁² - v₂²)/g

(v₁ - v₂)²/g

TRUE ANSWER : ?
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A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 (225)1/3 minutes

4 x V225 minutes

4 minutes

4 x (225)3/2 minutes

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The unit of surface tension is

N/m2

N/m3

N/m

N-m

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YOUR ANSWER : ?

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