List of practice Questions

A Pelton wheel develops 5520 kW under a head of 225 m at an overall efficiency of 80% when revolving at a speed of 300 rpm. Then the unit speed is
In a ghat area, the average annual rainfall observed is 500 mm. Then the average annual runoff in millimetres as per the Inglis and DeSouza's formula is
Wind blowing over the water surface in the reservoir developed a wave of height 2 m. Then the wave force in kN/m on the upper portion of gravity dam is
If wheat requires about 75 mm of water after every 28 days, and the base period for wheat is 140 days, the value of delta for wheat is
From a sieve analysis test on a soil sample, the mean size of particles observed is 1 mm. The Lacey’s silt factor is
A pitot tube is used to measure
A square lamina (each side equal to 2m) is submerged vertically in water such that the upper edge of the lamina is at a depth of 0.5 m from the free surface. What will be the total water pressure (in kN) on the lamina? (take \( \gamma_w = 10 \, \text{kN/m}^3 \))
An ideal flow of a liquid obeys:
In which of the following cases, the hydraulic jump is not possible?
For critical flow conditions in rectangular channels, which of the following is the correct relationship between critical depth \( y_c \) and specific energy \( E \)?
Which factor does not contribute to the instability of slopes?
The bearing capacity of soil supporting a footing of size $ 3 \, \text{m} \times 3 \, \text{m} $ will not be affected by the presence of water table located at a depth below the base of footing of
The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of \( 30^\circ \) and with a weight of \( 1.8 \, \text{t/m}^3 \) is
If the actual value of the standard penetration number, SPT N measured in fine sand below the water table is 19, then the corrected value of SPT N for dilatancy is
What is the purpose of pile caps in deep foundation systems?
The active earth pressure of a soil is proportional to (where \( \phi \) is the angle of internal friction of soil)
The water content at which soil just begins to crumble when rolled into threads of 3 mm in diameter is known
The lateral earth pressure on a retaining wall is called passive earth pressure when
Minimum size of the particles of silty soil is
General shear failure is common in which of the following soils?
As per the BIS:1904 (1986), the maximum permissible settlement for raft foundations on sand is
In a plate load test on clay soil, the ratio of ultimate bearing capacity of footing to the ultimate bearing capacity of plate is
For a steel built-up column subjected to an axial force of 1200 kN, the lacing system is to be designed for resisting transverse shear of
In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The flow index of soil is
A soil which was compacted at 10% moisture content has bulk unit weight of \( 22 \, \text{kN/m}^3 \). Then its dry unit weight is