Hydraulics & Fluid Mechanics For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is inversely proportional to Reynolds number and indpendent of pipe wall roughness directly proportional to Reynolds number and independent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number inversely proportional to Reynolds number and indpendent of pipe wall roughness directly proportional to Reynolds number and independent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ? 10 m/sec 50 m/sec 25 m/sec 2 m/sec 10 m/sec 50 m/sec 25 m/sec 2 m/sec ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics A perfect gas has constant viscosity None of these is incompressible is of theoretical interest has constant viscosity None of these is incompressible is of theoretical interest ANSWER DOWNLOAD EXAMIANS APP
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 300 337.5 600 675 300 337.5 600 675 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics For a floating body to be in equilibrium meta center should be above e.g. a righting couple should be formed All of these center of buoyancy and e.g. must lie on same vertical plane meta center should be above e.g. a righting couple should be formed All of these center of buoyancy and e.g. must lie on same vertical plane ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics Least possible value of correction factor for i) kinetic energy is zero ii) kinetic energy is 1 iii) momentum is zero iv) momentum is 1 The correct statements are (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (iii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
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