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Mechanical Engineering - Hydraulics and Fluid Mechanics

Exercise : Hydraulics and Fluid Mechanics - Section 1
11.
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
Answer: Option
Explanation:
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12.
Coefficient of contraction is the ratio of
actual velocity of jet at vena contracta to the theoretical velocity
loss of head in the orifice to the head of water available at the exit of the orifice
actual discharge through an orifice to the theoretical discharge
area of jet at vena contracta to the area of orifice
Answer: Option
Explanation:
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13.
In a free nappe,
the pressure below the nappe is atmospheric
the pressure below the nappe is negative
the pressure above the nappe is atmospheric
the pressure above the nappe is negative
Answer: Option
Explanation:
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14.
The Reynold's number of a ship is __________ to its velocity and length.
directly proportional
inversely proportional
Answer: Option
Explanation:
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15.
When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.
True
False
Answer: Option
Explanation:
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