Shear stress develops on a fluid element, if :
Un-factored maximum bending moments at a section of a reinforced concrete beam resulting from a frame analysis areandkNm under dead, live, wind and earthquake loads respectively. The design moment (kNm) as per IS: 456-for the limit state of collapse (flexure) is
Maximum size of a fillet weld for a plate of square edge is
The reaction time for calculation of stopping distance may be assumed as
The cylinder strength of the concrete is less than the cube strength because of
A hydraulic turbine has a discharge of 5 m3/s, when operating under a head ofm with a speed ofrpm. If it is to operate under a head ofm, for the same discharge, the rotational speed in rpm will approximately be
The microbial quality of treated piped water supplies is monitored by
The treatment that should be given to the water from a deep tube well is :
Vane tester is normally used for determining in situ shear strength of :
The percentage error in the computed discharge over a triangular notch corresponding to an error ofin the measurement of the head over the notch, would be
A water treatment plant is required to processm3/d of raw water (density =kg/m3, kinematic viscosity = 10-6 m2/s). The rapid mixing tank imparts tank a velocity gradient of 900s-1 to blendmg/l of alum with the flow for a detention time of 2 minutes. The power input (W) required for rapid mixing is
A nozzle discharging water under head H has an outlet area "a" and discharge coefficient cd = 1.A vertical plate is acted upon by the fluid force Fj when held across the free jet and by the fluid force Fn when held against the nozzle to stop the flow, the ratio Fj/Fn is
The 5-day BOD of a wastewater sample is obtained asmg/l (with k = 0.h-1). The ultimate oxygen demand (mg/l) of the sample will be
On sag (or valley) curves the available sight distance is determined based on :
A hydraulic turbine develops a power of 104 metric horse power while running at a speed ofrevolutions per minute, under a head ofm. Its specific speed is nearest to one of the following :
A tube well having a capacity of 4 m3/hour operates forhours each day during the irrigation season. How much area can be commanded if the irrigation interval isdays and depth of irrigation is 7 cm ?
In a steady radial flow into an intake, the velocity is found to vary as (1/r2), where r is the radial distance. The acceleration of the flow is proportional to
For the frame shown in the below figure, the maximum bending moment in the column is,
For a highway with design speed ofkmph, the safe overtaking sight distance is (assume accelerations as 0.m/sec2)
Mechanical stabilization requires :
Base course is used in rigid pavements for
For a flow of 5.7 MLD (million litres per day) and a detention time of 2 hours, the surface area of a rectangular sedimentation tank to remove all particles having settling velocity of 0.mm/s is
The particle size distribution curves are extremely useful for the classification of
If duty (D) ishectares/cumec and base period (B) isdays for an irrigated crop, then delta (Δ) in meters is given by
The disinfection efficiency of chlorine in water treatment
A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS : 456-2000
The net effective cross sectional area calculated in the steel angle tension member design, accounts for:
The following two statements are made with reference to a simply supported under-reinforced RCC beam :
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