Granite mainly composed of quartz and feldspar particles, is obtained from
ISRO Scientist or Engineer Civil 2015
For the following questions answer them individually
Inner part of a timber log surrounding thepitch, is called
Galvanising means covering iron with a thin coat of
The arrangement of supporting an existing structure by providing supports underneath, is known as
The type of brick masonry bond in which every course contains both headers and stretchers, is called
The depth of an arch is the distance between
If height of the first storey of a building is 3.25 m and riser is 13 cm, the number of treads required is
The pile provided with one or more bulbs in its vertical shaft, is generally known as
If R is the radius of earth and his the altitude above mean sea level at a location then correction for length L for reduction to mean sea level is
Whenthe bubbleof the level tube of a level remains central
The direction of steepest slope on a contour is
Closed contours of decreasing values towards their centre, represent
The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as
Longitudes are measured from $$0^\circ$$ to
If two equal forces of magnitude P act at an angle $$\theta$$, their resultant, will be
The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis is
To double the period ofoscillation of a simple pendulum
For perfectly elastic bodies, the value of coefficient of restitution is
If $$l$$ is the span of a light suspension bridge whose each cable carries total weight $$(\omega)$$ and the central dip is $$y$$, the horizontal pull at each support, is
A load of 500 kg waslifted through a distance of 13 cm by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is
A simply supported beam of span L carries a total load W which is uniformly distributed.The maximum bending moment M is
If there are ‘m’ unknown numberforces, ‘r’ unknown reaction components and ‘j’ number of joints, then the degreeofstatic indeterminacyofpin-jointed plane frameis given by
The property of a material by which it can be beatenor rolled into thin plates, is called
If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the deflection of the beam at the centre will be changed by a factor of
Which is the correct statement as per Law of polygon of forces?
Degree of kinematic indeterminacy of a pin jointed plane frameis given by
The shapeoffire hose nozzle is generally kept
Discharge over an ogee weir remains the same as that of
The ratio of hydraulic radius of a pipe running full to the hydraulic radius of a square section of a channel running full whoseside is equal to the diameter of the pipe is
Kinematic viscosity equals to
A fluid in equilibrium can’t sustain
The line of action of the buoyantforce acts through the
Match list I with list II
Isohytes are the imaginary lines joining the points of equal
Match List-I with List-II and select the correct answer using the code given below the Lists:
Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure
Toughness index of q soil is defined as the ratio of
According to BIS classification, the range of silt size particles is
The clay mineral with the largest swelling and shrinkage characteristic is
A-soil has liquid limit = 32, plastic limit = 18, shrinkage limit = 8 and natural moisture content = 22%. What will be its liquidity index andplasticity index?
A cohesive soil yields a maximum dry density of 18 $$\frac{KN}{m^{3}}$$ during a standard Proctor Compaction test. If the specific gravity is 2.65, what would beits void ratio?
Effective stress on soil
The slope of isochrones at any point at a given time indicates the rate of change of
Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time to layer B of the same thickness with double drainage and coefficient of consolidation $$\frac{Cv}{2}$$ to achieve the same degree of consolidation
In momentdistribution method, the sum of distribution factors of all the members meeting at any joint is always
To generate the jth column of the flexibility matrix
The deformation of a spring produced by a unit loadis called
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is
An aquicludeis
Slenderness ratio of a compression memberis
The thickness “t” of a single flat lacing should not be less than
Web crippling generally occurs at the point where
Stiffeners are used in a plate girder
The normal scour depth D below the designed flood level of a river may be calculated from the Lacey's equation, where C= Constant, Q = Design flood discharge and f=silt factor
A fallina canal bed is generally provided, if
The steepest gradient permitted on roads which, in ordinary conditions, does not exceed, is known
While calculating the sight distances, the driver's eye above road surface is assumed as
The radius of curvature provided along a transition curve, is
Staggered rail joints are generally provided
The critical activity has
According to BIS method of measurement, the order of the sequence is
Which one of the following types of samples is relatively employed for the design of waste water treatment plants?
In very first stage of decomposition of the organic matter in sewage
The characteristics of fresh and septic sewage respectively are
Ultimate strength to cementis provided by
Strength of concrete increases with
The compressive strength of 100 mm cubeof concrete as compared to 150 mm cubeis
The individual variation between test strength of concrete cube sample should not be more than
The ratio of maximum shear stress to average shear stress of a beam circular in cross-section, is
In prestressed concrete
The value of
is
The series $$1+\frac{1}{2^{2}}-\frac{1}{3^{2}}-\frac{1}{4^{2}}-\frac{1}{5^{2}}+\frac{1}{6^{2}}-\frac{1}{7^{2}}-\frac{1}{8^{2}}+............\infty$$ is
The complete solution of the linear differential equation $$\frac{d^{2} y}{dx^{2}}+(a+b)\frac{dy}{dx}+aby=0$$
To multiply a matrix by scalar K, multiply
Then the determinant AB has the value
The period of a simple pendulum is $$T = 2\pi \sqrt{\frac{L}{g}}$$.The maximum error in 7 due to the possible error upto 1% in ‘L’ and 2.5% in ‘g’ is
The value of $$\int_{0}^{\frac{\pi}{2}} \sin^{2}\theta . \cos^{4}\theta d\theta$$ is
If $$f(x, y) = x^{3}y - xy^{3}$$, then what is the value of $$[\frac{1}{(\frac{df}{dx})}+\frac{1}{(\frac{df}{dy})}] x = 1, y = 2 ?$$
What is the complete solution for the equation $$x (y - z) p + y(z - x)q = z(x - y)?$$
The solution of $$\frac{d^{2}z}{dx^{2}}+z = 0$$ given that when $$x = 0, z = e^{y}$$ and $$\frac{dz}{dx} = 1$$ is
