ESE 2022 CE Technical Quiz 10

The mean drag coefficient for an entirely laminar boundary layer over a flat plate is given by K₁×. Similarly mean drag coefficient for an entirely turbulent boundary layer over a flat plate is given by K₃× correct values of K₁, K₂, K₃ and K₄ are respectively given by:

What would be the critical velocity of water flowing through a rectangular channel of width 4 m carrying discharge of 10 m³/s.

For the fixed steel beam shown in figure below, the value of load P at collapse is given by:

Statement (I): For fine sand below water table, dilatency correction should be applied to ‘N’ (SPT) value, if N > 15.

Statement (II): In granular soil, confining pressure increases with the depth, hence ‘N’ value at shallow depth is underestimated and that at greater depths is overestimated.

Statement (I): Terzaghi’s theory of bearing capacity is applicable for shallow foundation only.

Statement (II): In Terzaghi’s theory, shear strength of the soil above the base of footing is neglected.

In a direct shear test done on a dry sand sample the shear stress is 0.5 kg/cm² and corresponding normal stress is 1.2 kg/cm².

Calculate the shear stress for a sample when normal stress applied is 2 kg/cm².

For nine free standing pile group having arc tan value of 21.2. The efficiency of pile group by converse Labarre formula.

Which of the following statements is NOT correct

Statement (I): Surge tank provided as close to the reservoir as possible.

Statement (II): Surge tank protects the penstock against water hammer.

Statement (I): If velocity potential function (ϕ) satisfies laplace equation, it represents possible steady incompressible rotational flow.

Statement (II): If stream function (ψ) satisfies the laplace equation, it is a possible case of an irrotational flow.