Hydraulics and Fluid Mechanics in ME When a liquid is flowing through a pipe, the velocity of the liquid is Minimum at the centre and maximum near the walls Maximum at the centre and zero near the walls Maximum at the centre and minimum near the walls Zero at the centre and maximum near the walls Minimum at the centre and maximum near the walls Maximum at the centre and zero near the walls Maximum at the centre and minimum near the walls Zero at the centre and maximum near the walls ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is v₁²/2g v₂²/2g 0.5 v₁²/2g 0.375 v₂²/2g v₁²/2g v₂²/2g 0.5 v₁²/2g 0.375 v₂²/2g ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Metacentric height is the distance between the metacentre and water surface center of buoyancy center of pressure center of gravity water surface center of buoyancy center of pressure center of gravity ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by Some other alterations in the impeller Trimming the impeller size to the required size by machining Designing new impeller Not possible Some other alterations in the impeller Trimming the impeller size to the required size by machining Designing new impeller Not possible ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME To avoid an interruption in the flow of a siphon, an air vessel is provided At any point between inlet and outlet At the outlet At the inlet At the summit At any point between inlet and outlet At the outlet At the inlet At the summit ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called Archimedes’s principle Bernoulli’s theorem Principle of flotation Pascal’s law Archimedes’s principle Bernoulli’s theorem Principle of flotation Pascal’s law ANSWER DOWNLOAD EXAMIANS APP
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