# According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

A. The weight of the body

B. More than the weight of the body

C. Less than the weight of the body

D. Weight of the fluid displaced by the body

**Answer: Option D **

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Related Questions on Hydraulics and Fluid Mechanics in ME

**A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.**

A. Steady

B. Streamline

C. Turbulent

D. Unsteady

**A hydraulic ram is a device used to**

A. Store the energy of water

B. Increase the pressure of water

C. To lift water from deep wells

D. To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height

A. The weight of the body

B. More than the weight of the body

C. Less than the weight of the body

D. Weight of the fluid displaced by the body

Trapezoidal weir is also called as Cippoletti weir. This is trapezoidal in shape and is the modification of rectangular weir with slightly higher capacity for same crest strength.In cippoletti weir both sides are having equal slope. So, we can divide the trapezoid into rectangle and triangle portions.

So, Total discharge over trapezoidal weir Q = discharge over rectangular weir + discharge over triangular weir

total flow over trapezoidal weir formula