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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

2 H/5
H/2
2 H/3
H/3

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

both (B) and (C)
it is the best liquid
the height of barometer will be less
its vapour pressure is so low that it may be neglected

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Hydraulics & Fluid Mechanics
Ay between two stream lines represents

head
velocity
pressure
discharge

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Hydraulics & Fluid Mechanics
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

981 PA
9810 PA
1 PA
91 PA

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Hydraulics & Fluid Mechanics
The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is

(i) and (iv)
(ii) and (iii)
(ii) and (iv)
(i) and (iii)

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Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

All of these
the area is inclined
the area is vertical
the area is horizontal

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