Which one of the following pairs is not correctly matched ?
Which one of the following is employed to determine strength of hardened existing concrete structure ?
What is the wave velocity for a uniform train of wave beyond the storm centre for a wave length ofm inm deep water ?
A body of mass 4 kg moving atm/s collides with another body of mass 8 kg and adheres to it. The resultant velocity of the total mass in m/s will be
The velocity distribution for flow over a plate is given by u = 0.5 y - y2 where u is the velocity in m/s at a distance y metre above the plate. If the dynamic viscosity of the fluid is 0.9 N/m2, then what is the shear stress at 0.m from the boundary?
The following steps are necessary to obtain sufficient accuracy with the tape :
Keeping uniform tension on tape for each measurement:
"Breaking" tape on slopes are necessary to keep the tape level.
Keeping accurate count of the stations.
Keeping the tape on the line being measured.
The correct sequence of these steps is
When power shovels are operated under different site conditions (in terms of material handled), what is the correct sequence in the increasing order of the ouput for the following materials ?
Well - blasted rock
Hard and tough clay
Poorly blasted rock
Moist loam or sand
Select the correct answer using the code given below :
Which of the following pairs is correctly matched ?
Which one of following statements associated with groynes :
Hydraulic behaviour of a system of groynes is influenced by the characteristics of particles that constitute the littoral drift.
Groyne is constructed approximately parallel to shore.
Which of the statements given above is/are correct ?
Reinforced concrete door and window frames can be compacted using :
needle vibrator
plate vibrator
form vibrator
tapping
The correct sequence of these equipment in order of preference (from the best to the worst) is
Maximum shear stress developed in a beam of rectangular section bears a constant ratio to its average shear stress and this ratio is equal to
In a design of storm sewers, if the time taken by rain-water to flow from the farthest point of the watershed to the sewer inlet is 'ti' and the time of flow of water from the sewer inlet to the point in the sewer that is under consideration is 'tf', then the time of concentration will be
The weight of aggregate having specific gravity 2.completely filled into a cylinder of volume 0.m3 is 5.2 kg. What is the value of the angularity index of aggregate (approximately) as given by Murdock ?
A simply supported beam AB of span L is subjected to a concentrated load W at the centre C of the span. According to Mohr's moment area method, which one of the following gives the deflection under the load ?
Consider the following statements :
Curing of concrete is necessary because
(a) concrete needs more water for chemical reaction
(b) it is necessary to protect the water initially mixed in concrete from being lost during evaporation
(c) penetration of surrounding water increases the strength of concrete Which of the statements given above is/are correct ?
A soil sample is having a specific gravity of 2.and a void ratio of 0.The water content in percentage required to fully saturate the soil at the void ratio would be
A reinforced concrete beam is designed for the limit states of collapse in flexure a shear. Which of the following limit states of serviceability have to be checked ?
Deflection
Cracking
Durability
Select the correct answer using the codes given below :
A rectangular channel of 2.5 m width and 2 m depth of water carries a flow ofm3/s. The specific energy for the flow is given by
Consider the following :
Initial consolidation.
Primary consolidation.
Secondary consolidation.
Final consolidation.
The three stages which would be relevant to consolidation of a soil deposit includes
For a state of plane stress σ1 = σx =MPa, and σ2 = σy = 20MPa. What are the values of the maximum in-plane shearing stress and absolute maximum shearing stress ?
A T-beam roof section has the following particulars :
Thickness of slabmm
Width of ribmm
Depth of beammm
Centre to centre distance of beams 3.0 m
Effective span of beams 6.0 m
Distance between points of contraflexure is 3.m.
The effective width of flange of the beam is
In a saturated clay layer undergoing consolidation with single drainage at its top, the pore water pressure would be the maximum at its
In which one of the following zones is a logarithmic spiral shape of failure surface assumed in the case of bearing capacity analysis of C-φ soils ?
If the Froude number of flow in an open channel is more than 1.0 then the flow is said to be
A circular pipe of radius R carries a laminar flow of a fluid. The average velocity is indicated as the local velocity at what radical distance, measured from the centre ?
Which one of the following statements is correct ?
Cant deficiency is the difference between
Which of the following pairs in respect of ordinary Portland cement (OPC) are correctly matched
Initial setting time....minutes
Final setting time....hours
Normal consistency....10%
Select the correct answer from the codes given below :
A bar of circular cross-section varies uniformly from a cross-section 2D to D. If extension of the bar is calculated treating it as a bar of average diameter, then the percentage error will be
While concreting in cold weather where frosting is also likely, one uses
The combined correction for curvature and refraction for a distance ofm is
A rectangular channel carries a discharge of 5 m3/s. The channel is 2 m wide. What is the critical depth of the flow ?
Two men, one stronger than the other have to lift a load ofN which is suspended from a light rod of length 3 m. The load is suspended between the two persons positioned at the two ends of the rod. The weaker of the two persons can carry a load up toN only. The distance of the load to be suspended from the stronger person such that the weaker person has the full share ofN is
Which of the following pollutants is responsible for depletion of ozone layer ?
What is the BOD5 at 20°C of a waste that yields an oxygen consumption of 2 mg/l from a 0.diluted sample ?
Consider the following statements :
Mastic asphalt is a mixture of hard grade bitumen or blown bitumen, minerals filter and fine aggregates.
% of binder content in the mastic asphalt is 17-percent by weight of the aggregates. Which of the statements given above is/are correct ?
The best design of an arch dam is when
Two pipe systems in series are said to be equivalent when
If Δ p is increment ofpressure on a normally consolidated saturated soil mass, as per Terzaghi's theory at the instant of application of pressure increment i.e. when time t =what is the pore pressure developed in the soil mass ?
A welded steel plate girder consisting of two flange plates ofmm xmm and a web plate ofmm x 6 mm, requires
Why are gate valves provided in distribution system ?
A dry sand specimen is put through a triaxial test. The cell pressure iskPa and the deviator stress at failure isPa. The angle of internal friction for the sand specimen is
The role of superplasticizer in a cement paste is to
A hollow cylinder made of wood (sp. gr. = 0.has an external diameter of 1.0 m and an interal diameter of 0.6 m. It floats in water with its axis vertical and is in stable equilibrium. This is possible only when the length of the cylinder is equal to or less than
The optimum number of revolutions over which concrete is required to be mixed in a mixer machine, is
Due to some point load anywhere on a fixed beam, the maximum free bending moment is M. The sum of fixed end moment is
Radial splits in timber originating from 'Bark' and narrowing towards the 'Pith' are known as
Consider the following statements related to interchanges:
In diamond interchange there is the possibility of illegal wrong-way turns.
Diamond interchange is far superior to cloverleaf design.
Which of the statements given above is/are correct ?
A spillway of an irrigation project is to be studied by means of a model constructed to a scale of 1 :The prototype discharge ism3/s. Neglecting the viscous and surface tension effects, the required flow rate for the model is
There are ten instrument staions occupied in succession during a traverse survey. An observer makes equal error in each station, the magnitude of which is δ θ in each instance at all the stations. What is the probable error of the final bearing at the end of the traverse ?
Amm long andmm diameter rod of steel (E =GPa, α =x 10-6/°C) is attached at the ends to unyielding supports. When the temperature is 30°C there is no stress in the rod. After the temperature of the rod drops to - 20°C, the axial stress in the rod will be