Mechanical Engineering - Hydraulics and Fluid Mechanics

31.
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
Answer: Option
Explanation:
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32.
The viscosity of water at 20°C is
one stoke
one centistroke
one poise
one centipoise
Answer: Option
Explanation:
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33.
The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.
same as
less than
more than
Answer: Option
Explanation:
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34.
The discharge through a channel of rectangular section will be maximum, if
its depth is twice the breadth
its breadth is twice the depth
its depth is thrice the breadth
its breadth is thrice the depth
Answer: Option
Explanation:
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35.
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
centre of pressure
centre of gravity
centre of buoyancy
metacentre
Answer: Option
Explanation:
No answer description is available. Let's discuss.