Hydraulics And Fluid Mechanics In Me - Study Mode

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[#211] The hydraulic mean depth or the hydraulic radius is the ratio of

(A) Area of flow and wetted perimeter

(B) Wetted perimeter and diameter of pipe

(C) Velocity of flow and area of flow

(D) None of these

Correct Answer

(A) Area of flow and wetted perimeter

[#212] The mass of 2.5 m 3 of a certain liquid is 2 tonnes. Its mass density is

(A) 200 kg/m 3

(B) 400 kg/m 3

(C) 600 kg/m 3

(D) 800 kg/m 3

Correct Answer

(D) 800 kg/m 3

[#213] Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

(A) 39.2%

(B) 49.2%

(C) 68.8%

(D) 84.8%

Correct Answer

(A) 39.2%

[#214] Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

(A) 39.2%

(B) 49.2%

(C) 68.8%

(D) 84.8%

Correct Answer

(D) 84.8%

[#215] The velocity of jet of water traveling out of opening in a tank filled with water is proportional to

(A) Head of water (h)

(B) h 2

(C) $$frac{{ ext{V}}}{{ ext{T}}}$$

(D) $$frac{{ ext{h}}}{2}$$

Correct Answer

(C) $$frac{{ ext{V}}}{{ ext{T}}}$$