List of practice Questions

A wide channel is 1 m deep and has a velocity of flow \( V = 2.13 \, \text{m/s} \). If a disturbance is caused, an elementary wave can travel upstream with a velocity of ............
A sphere of 150 mm diameter is held in equilibrium by a vertical air stream of velocity 15 m/s. If the density of air is \( 1.225 \, \text{kg/m}^3 \) and the coefficient of drag is 0.43, the weight of the sphere is ...........
Magnitude of the component of velocity at point (1,1) for a stream function \( \Psi = x^2 - y^2 \) is equal to ............
In a 1:100 scale model of a harbour, the time which will correspond to the prototype tidal period of 12 hours will be ............
The maximum diameter that a capillary tube can have to ensure that a capillary rise of at least 6 mm is achieved when the tube is dipped into a body of liquid with surface tension \( = 0.08 \, \text{N/m} \) and density \( = 900 \, \text{kg/m}^3 \) is ...........
If atmospheric pressure head is 9 m, vapour pressure head (maximum) is 1 m, failure head is 40 m and cavitation coefficient \( \sigma \) is 0.15, then height at which the turbine can be set above the tailrace level is ...........
A 75 mm diameter pipe of 500 m length operates under a head of 60 m at its inlet. If a nozzle is fitted at its outlet, then for most efficient conditions, the velocity of flow from the nozzle (with \( C_v = 1 \)) is .........
In the pile load estimation in very soft clay, the adhesion factor considered is ............
If the ground water table is exactly at the base of the foundation, the maximum water table reduction factor may be ............
If an infinite slope of clay at a depth 5 m has cohesion of 10 kPa and unit weight of 20 kN/m\(^3\), then the stability number corresponding to a critical condition will be ............
A retaining wall has a backfill of pure clay whose unconfined compressive strength is 40 kPa and unit weight 20 kN/m\(^3\). The depth of tension crack developed in the backfill is ............
If \( \gamma \) is the unit weight of soil, \( D_f \) is the depth of foundation, and \( F \) is the factor of safety, the difference in gross safe bearing capacity and net safe bearing capacity is expressed as ............
A layer of clay soil has saturated unit weight of 20 kN/m$^3$. Ground water table is located at ground surface and unit weight of water is 10 kN/m$^3$. If the over consolidation ratio of soil at 5 m below ground level is 2, what would be the maximum effective stress to which the soil has been subjected in its stress history?
In a plate load test, the minimum ratio of widths of pit to plate to be maintained is .........
A cohesionless soil sample has showed an angle of internal friction 30$^\circ$ at failure corresponding to a cell pressure of 100 kPa. The deviator stress at failure is..........
Due to capillary rise in soil, the effective stress ...........
A point load of 400 kN is acting on the surface of the ground. The vertical stress directly below the load at 2 m depth as per the Boussinesq’s theory is .........
A soil has coefficient of uniformity of 6, particle size corresponding to 60% finer and 30% finer are respectively 0.85 and 0.35. Then the coefficient of curvature of soil is ..........
If the actual observed value of standard penetration resistance, N is 21 in a fine sand layer below the water table, then the corrected N value for dilatancy is ............
The slope at the end of a simply supported beam with a central point load is .........
In prestressed concrete, the primary purpose of prestressing is to ........
A fully saturated soil has water content of 20% and specific gravity 2.5, then its porosity is ..........
How much percentage of average bond stress is increased for reinforced bars subjected to compression?
For a symmetrical I-section beam, the shear stress is maximum at ...........
According to IS: 800-2007, the lacing bars in a steel column should resist a transverse shear equal to .........