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 directly proportional to pipe wall roughness and independent of Reynolds number inversely proportional to Reynolds number and indpendent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness directly proportional to Reynolds number and independent of 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 inversely proportional to Reynolds number and directly proportional to pipe wall roughness ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is (ii) and (iii) (i) and (iii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (iii) (i) and (iv) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The units of viscosity are newton-sec/metre newton-sec/metre2 metre2/se kg sec/metre newton-sec/metre newton-sec/metre2 metre2/se kg sec/metre ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head) H/2 2 H/3 2 H/5 H/3 H/2 2 H/3 2 H/5 H/3 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics Surface energy per unit area of a surface is numerically equal to surface tension force of cohesion atmospheric pressure force of adhesion surface tension force of cohesion atmospheric pressure force of adhesion ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of 4.0 M 4.8 M 4.2 M 4.6 M 4.0 M 4.8 M 4.2 M 4.6 M ANSWER DOWNLOAD EXAMIANS APP
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