Hydraulics & Fluid Mechanics For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be 337.5 675 600 300 337.5 675 600 300 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is directly proportional to Reynolds number and independent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness inversely proportional to Reynolds number and indpendent of pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number directly proportional to Reynolds number and independent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness inversely proportional to Reynolds number and indpendent of pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics For a floating body to be in stable equilibrium, its metacentre should be below the center of buoyancy between e.g. and center of pressure above the center of gravity. above the center of buoyancy below the center of buoyancy between e.g. and center of pressure above the center of gravity. above the center of buoyancy ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics When a body floating in a liquid, is displaced slightly, it oscillates about metacentre e.g. of body center of buoyancy center of pressure metacentre e.g. of body center of buoyancy center of pressure ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ? 1:50 1 : 5 1 : 2.5 1 :25 1:50 1 : 5 1 : 2.5 1 :25 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The line of action of the buoyant force acts through the centroid of the submerged body volume of the floating body displaced volume of the fluid volume of the fluid vertically above the body submerged body volume of the floating body displaced volume of the fluid volume of the fluid vertically above the body ANSWER DOWNLOAD EXAMIANS APP
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