Hydraulics and Fluid Mechanics in ME The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by 2V/(vr + v) 2V/(vr - v) V/(vr + v) V/(vr - v) 2V/(vr + v) 2V/(vr - v) V/(vr + v) V/(vr - v) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Ratio of inertia force to surface Jension is known as Weber’s number Froude number Reynold’s number Mach number Weber’s number Froude number Reynold’s number Mach number ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface) (IG/Ax̅) - x̅ (Ax̅/IG) + x̅ (IG/Ax̅) + x̅ (IG/x̅) - Ax̅ (IG/Ax̅) - x̅ (Ax̅/IG) + x̅ (IG/Ax̅) + x̅ (IG/x̅) - Ax̅ ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is (waV²/2g) × sin 2θ (waV/g) × sin θ (waV²/g) × sin θ (waV/2g) × sin θ (waV²/2g) × sin 2θ (waV/g) × sin θ (waV²/g) × sin θ (waV/2g) × sin θ 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 Bernoulli’s theorem Archimedes’s principle Principle of flotation Pascal’s law Bernoulli’s theorem Archimedes’s principle Principle of flotation Pascal’s law ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is 0.87 0.78 0.64 0.46 0.87 0.78 0.64 0.46 ANSWER DOWNLOAD EXAMIANS APP
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