As per IS : 456 in a two-way slab, the width of the middle strip along each span should be
1. 3/8 of the width of span in that direction
2.3/8 of the width of span at right angles
3.3/4 of the shortest side of the slab
4.3/4 of width of the span in that direction
Coefficient of resistance Cr for an orifice is equal to
1. (1 - Cv^2)
2.(1/Cv^2 - 1)
3. (1 / Cc^2 Cd^2)
4. (1 - Cd^2 Cv^2)
For no torsion, the plane of bending should
1.be parallel to one of the principal axis
2.pass through shear centre of section
3.pass through neutral axis of the section
4.pass through centre of gravity of the section
For normal loading conditions on a simply supported beam the breadth of the beam can be assumed as nearly
1.1/12 of span of the beam
2. 1/16 of span of the beam
3.1/24 of span of the beam
4.1/30 of span of the beam
he slenderness ratio of a tension member should not exceed 350, if the member is subjected to _____ stresses resulting from wind force
1.Compressive
2.Tensile
3.Bending
4.Reversible
If a material has identical properties in all directions, it is said to be
1.homogeneous
2.isotropic
3.elastic
4.orthotropic
If the Young's modulus of elasticity of a material is twice its modulus of rigidity, then the poisson's ratio of the material is
1.-1
2.-0.5
3.0.5
4.0
In turbine governing system, the pump used is
1.centrifugal pump
2.reciprocating pump
3.gear pump
4.uplift pump
Load carrying capacity of long columns are less as compared to short columns due to
1. buckling effect of columns
2. crippling effects of columns
3.bending effects of columns
4.twisting effect of columns
Maximum shear force occurs at the edge of a base plate in a _____ footing
1.Stepped
2.Rectangular
3.Square
4.Grillage
. In a triangular notch an error of 1% in measuring head will produce _____ error in discharge
1.1%
2. 1.5%
3. 2%
4.2.5%
0.67 is the effective length of a compression member _____
1.Fixed at both ends
2.Free at both ends
3.Held in position and restrain in direction at both ends
4.Fixed at both lower end and free at upper end
27t is the strength of ISA 155 x 75 x 10 used as a tie member with the longer leg connected at the ends by a _____ mm dia rivet
1.22
2.25
3.27
4.32
A horizontal pipe of carrying liquid increases its diameter d1 to d2. The pressure increase is maximum when d1 to d2 is
1.1/2
2.1/3
3. 1/Sqrt(2)
4.1/4
A hydraulic jump is used for
1.increasing the depth of flow
2. reducing the energy of flow
3.decreasing the velocity of flow
4. reducing turbulence
A simply supported beam of length l carries a load varying uniformly from zero at left end to maximum at right end. The maximum bending moment occurs at a distance of
1.1/Sqrt(3) from left end
2.1/3 from left end
3.1/Sqrt(3) from right end
4.1/3 from right end
A unit hydrograph has one unit of
1.rainfall duration
2.rainfall excess
3. time base of direct runoff
4.discharge
A water shed canal
1. irrigates only on one side
2.avoids the cross drainage works
3.is generally aligned parallel to the contours of the area
4.is most suitable in hilly areas
According to Unwin's formula, the diameter of rivet in mm to suit the t mm thickness of plate is given by
1.6t
2.6 Sqrt(t)
3.1.9 Sqrt(t)
4.1.5t + 4
Aeration holes are provided
1.in a weit with end contraction
2.in a suppresses weir
3.in a cippoletti weir
4. in all weirs
An impermeable foundation which neither contains water nor transmits any water is called
1.Aqueduct
2.Aquifer
3.Aquiclude
4.Confined aquifer
As per IS : 456 the thickness of footing edge on soils should not be less than
1.10 cm
2.12 cm
3.15 cm
4. 20 cm
Bombay harbour is an example of _____ harbour
1.artificial
2.natural
3.excavating
4.dreading
Developement of _____ in river meandering causes violent changes in river
1.delta
2.critical velocity
3.cut off
4.turbulance
Diameter of nozzle d for maximum power transmission is given as
1. d = (D^5 / 8fl)^1/4
2.d = (D^5 / 8fl)^1/5
3. d = (D^4 / 8fl)^1/5
4.d = (8fl/5)^1/4
For a flood control reservoir, the effective storage is equal to
1.useful storage - valley storage
2.useful storage + surcharge storage
3.useful storage - surcharge storage
4.useful storage + surcharge storage - valley storage
For an isotropic, homogeneous and elastic material obeying Hook's law, number of independent elastic constants is
1.2
2.3
3.4
4.1
For laminar flow through a pipe, the energy correction factor is
1.1.03
2.1.05
3.1.33
4.2.00
Hardening of metal is due to heating to a particular temperature and followed by rapid cooling in a _____ media
1.Cooling
2.Tempering
3.Quenching
4.Freezing
In case of an external mouth piece the pressures at vena contracta is equal to
1.Ha - 0.98 H
2.Ha - 0.89 H
3.Ha - 0.77 H
4.Ha - 0.87 H
L/2 is the effective length of a column, fixed in _____ at its top and bottom
1.position
2.direction
3. position & direction
4.None of these
Of the two prismatic beams of same material, length and flexural strength, one is circular and other is square in cross-section, the ratio of weights of circular and square beam is
1.1.118
2.1.342
3.1.000
4.0.793
Surge tank is provided to prevent the effect of
1. racing of turbine
2.pressure reaction
3.water hammer
4.spilling of water
The angle of inclination of lacing bars in steel ties should be more than
1.25
2.40
3.60
4.75
The canal through which water is led into mouth of the penstocks is
1. fore day
2.tail race
3.trash rack
4.power canal
The coefficient of discharge for a convergent divergent mouth piece is
1.2/3
2.1/3
3.1/2
4.3/4
The coefficient of discharge for a convergent divergent mouth piece is
1.2/3
2.1/3
3.1/2
4.3/4
The device fitted to a reciprocating pump for smooth and uniform flow is called
1.accelerator
2.impeller
3.booster
4.air vessel
The first step in the operation of a centrifugal pump is
1.pumping
2.straining
3.priming
4.None of these
The flow in a river during floods may be classified as
1.laminar flow
2.streamline flow
3. irrotational flow
4. turbulent flow
The force required to act upon the jet of water to change the velocity either in direction or in magnitude is called by
1.hydrostatic force
2.dynamic force
3.absolute force
4.power canal
The head of water supplied to a nozzle is 12 m. The loss of head due to friction at at maximum power transmission is
1.3 m
2.4 m
3.1.2 m
4.6 m
The meander pattern of a river is developed by
1.average discharge
2.dominant discharge
3. maximum discharge
4.critical discharge
The minimum distance between centres of rivet holes should be
1.2.5 times the hole diameter
2.1.5 times the hole diameter
3.3 times of hole diameter
4.equal to the hole diameter
The operation of removal of external material from the sea or river bed is known as
1.digging
2.shoveling
3.excavating
4.dredging
The reinforcement provided in the form of ties or stirrups or binders in a column is known as
1. longitudinal reinforcement
2. transverse reinforcement
3.temperature reinforcement
4.distributary reinforcement
The sum of normal stresses is
1.constant
2.variable
3.dependent on the planes
4.none of the above
Weep holes are provided in canal lining to
1.improve strength of lining
2.give additional anchorage against sliding
3. provide water into branch canals
4.have drainage facility
When a beam section spans over several supports continuously then the beam at supports should be designed as
1. Singly reinforced beam
2.Doubly reinforced beam
3.Pre-stressed beam
4. Pre-cast beam
When the fluid properties do not change with time, it is a _____ flow
1.steady
2.uniform
3.unsteady
4.non-uniform