Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering

A. 0.34 times

B. 0.67 times

C. 0.81 times

D. 0.95 times

A. $$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left[ {{{\text{H}}_1} - {{\text{H}}_{\text{a}}}} \right]$$

B. $$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left[ {{\text{H}}_1^{\frac{3}{2}} - {\text{H}}_{\text{a}}^{\frac{3}{2}}} \right]$$

C. $$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left[ {{\text{H}}_1^2 - {\text{H}}_{\text{a}}^2} \right]$$

D. $$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left[ {{\text{H}}_1^{\frac{5}{2}} - {\text{H}}_{\text{a}}^{\frac{5}{2}}} \right]$$

A. 400 kg/cm²

B. 4000 kg/cm²

C. 40 × 10⁵ kg/cm²

D. 40 × 10⁶ kg/cm²

A. Keeps on increasing

B. Keeps on decreasing

C. Remain constant

D. May increase/decrease

A. Weber's number is the ratio of inertia force to elastic force

B. Weber's number is the ratio of gravity force to surface tension force

C. Weber's number is the ratio of viscous force to pressure force

D. Weber's number is the ratio of inertia force to surface tension force

A. Local atmospheric pressure depends upon elevation of locality only

B. Standard atmospheric pressure is the mean local atmospheric pressure at sea level

C. Local atmospheric pressure is always below standard atmospheric pressure

D. A barometer reads the difference between local and standard atmospheric pressure

A. Zero

B. Minimum

C. Maximum

D. None of these

A. It gives maximum discharge for a given cross-sectional area and bed slope

B. It has minimum wetted perimeter

C. It involves lesser excavation for the designed amount of discharge

D. All of the above

A. $$1.84\left( {{\text{L}} - 0.1{\text{nH}}} \right){{\text{H}}^{\frac{3}{2}}}$$

B. $$1.84\left( {{\text{L}} - {\text{nH}}} \right){{\text{H}}^2}$$

C. $$1.84\left( {{\text{L}} - 0.1{\text{nH}}} \right){{\text{H}}^{\frac{5}{2}}}$$

D. $$1.84\left( {{\text{L}} - {\text{nH}}} \right){{\text{H}}^3}$$

A. $$\frac{{{\text{v}}_1^2}}{{2{\text{g}}}}$$

B. $$\frac{{{\text{v}}_2^2}}{{2{\text{g}}}}$$

C. $$\frac{{0.5{\text{v}}_1^2}}{{2{\text{g}}}}$$

D. $$\frac{{0.375{\text{v}}_2^2}}{{2{\text{g}}}}$$