1. A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension) A. B. C. D. Answer: Option …

Read More »## Hydraulics and Fluid Mechanics – Section 4

1. 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 Answer: Option A Explanation: No answer description available for this question. …

Read More »## Hydraulics and Fluid Mechanics – Section 3

1. In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice. A. equal to B. one-fourth C. one-third D. one-half Answer: Option B Explanation: No answer description available for this question. Let us discuss. 2. Viscous …

Read More »## Hydraulics and Fluid Mechanics – Section 2

1. A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by A. …

Read More »## Hydraulics and Fluid Mechanics – Section 1

1. One litre of water occupies a volume of A. 100 cm3 B. 250 cm3 C. 500 cm3 D. 1000 cm3 Answer: Option D Explanation: No answer description available for this question. Let us discuss. 2. The value of bulk modulus of a fluid is required to determine A. Reynold’s …

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