Find the maximum reaction at B when rolling load of udl 2kN/m having 4m length passes through the beam given below
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Solution
A plane area in the form of right angle triangle of height h is immersed vertically in water with its vertex at the water surface, then it is taken out and again immersed vertically such that its base is at the water surface. The ratio of distances moved by centre of gravity to that of centre of pressure is____
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Solution
A square lamina is immersed in water with one of the diagonals verticals as shown. Distance of centre of pressure from the water surface is_______ m.
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Solution
A cylindrical process reactor is made of heavy construciton and contains two liquids A and B as shown. There is an airspace of 100 mm above the top free surace of liquid B. If in the process pressure changes from 50 atm to 100 atm. The drop in the top surface of liquid B is ______ mm.Bulk density
KA= 2200 atm
KB= 15000 atm
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Solution
A load 1000 kN applied at point A, as shown in the figure below, produces a vertical deflection at B and C of the beamas Δb= 10 mm and Δc= 15 mm respectively.The deflection at A when loads at 100 kN and 300 kN are applied at B and C respectively will be _________ mm
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Solution
From reciprocal virtual work theorum.
1000 × Δ= (100 × 10) + (300 × 15)
1000 Δ = 1000 + 4500
1000 Δ = 5500
Δ = 5.5 mm
A member is made of structural steel. When it is subjected to simple tension, the limit of proportionality is 350 N/mm2.If the principal stress σ1 and σ2 developed in the member are 100 N/mm2(tensile) and 40 N/mm2(compressive)respectively and Poisson’s ratio is 0.3, then the factor of safety according to maximum shear stress theory would be ___ .
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Solution
With reference to Rankine’s theory of earth pressure which of the following are correct.
1.It is applicable to homogeneous, isotropic, dry and cohensionless soil.
2.It is also applicable to homogeneous, isotropic,submerged and cohesive soil.
3.It assumed plastic equilibrium at the failure surface.4.It assumed every point in the soil mass experiences shear failure under the developed shear stress.
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Solution
Rankine derived its theory for dry cohesionless soil but later it was also extended to submerged and cohensive soils also. Hence statement 1 and 2 are correct.
Rankine's theory considered stress in soil mass when it is in plastic equilibrium, it assumed every point in soil mass experiences shear failure under the developed shear stress although in reality entire soil mass never experiences plastic equilibrium. Hence option (c) is correct.
If the sensitivity of an irrigation module is 0.5 then what percent variation in the outlet discharge will be caused by 60 percent variation in canal water depth.
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Solution
A large tank partially filled with water, the air space above being under pressure. A 0.05m house connected to the tank discharges on the roof of the building 15m above the level of the tank friction loss is 0.05 m. The air pressure which is to be maintained in the tank to deliver 0.002 m3/sec will be_____ Kpa.(Assume negligible depth of water as compared to building height)
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Solution
Consider the following factors:
1.Period of construction, winter/summer
2.Degree of foundation roughness
3.Slab thickness
4.Reinforced / unreinforced.
Which of these factors are considered as per IRC for obtaining the maximum expansion joint spacing in rigid pavements ?