Related Questions

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?
A 35
B 40
C 45
D 50
In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?
A 35
B 40
C 45
D 50
Black cotton soil is unsuitable for foundations because its
A Bearing capacity is low
B Permeability is uncertain
C Particles are cohesive
D Property to undergo a volumetric change due to variation of moisture content
Safe bearing capacity of black cotton soil varies from
A 2 to 3 t/m2
B 5 to 7.5 t/m2
C 8 to 10 t/m2
D 10 to 12 t/m2
The differential settlement in case of foundations on sandy soils should not exceed
A 25 mm
B 40 mm
C 65 mm
D 100 mm
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing and R = Radius of bearing surface)
A $$\frac{1}{2}$$μWR
B $$\frac{2}{3}$$μWR
C $$\frac{3}{4}$$μWR
D μWR
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.
A 10 times
B 5 times
C 15 times
D 20 times
If p = bearing pressure on projected bearing area, Z = absolute viscosity of lubricant and N = speed of journal, then the bearing characteristic number is given by
A $$\frac{{{\text{ZN}}}}{{\text{p}}}$$
B $$\frac{{\text{p}}}{{{\text{ZN}}}}$$
C $$\frac{{\text{Z}}}{{{\text{pN}}}}$$
D $$\frac{{\text{N}}}{{{\text{Zp}}}}$$
Which of the following pavement can be used, for construction on black cotton soils?
A Flexible pavement
B Semi-flexible pavement
C Rigid pavement
D All of the mentioned
Black soils are ideal for cultivation of cotton as
A Their colour is black
B They can retain moisture
C They are made of lava
D They are found on plateau regions

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