If the pump head ism, discharge is 0.m3/s and the motor speed isrpm at rated condition, the specific speed of the pump is about
At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :
The value of bearing capacity factor for cohesion, Nc, for piles as per Meyerhof, is taken as :
If the porosity of a soil sample is 20%, the void ratio is
A wastewater sample contains 10-5.6 mmol/l of OH ions atC. The pH of this sample is
The modulus of rupture of concrete gives
The appropriate field test to determine the insitu undrained shear strength of soft clay is :
In a river, discharge ism3/s; water surface slope is 1 inand stage at the gauge station is 10.0 m. If during a flood, the stage at the gauge station is same and the water surface slope is 1 inthe flood discharge in m3/s, is approximately
Rapid curing cut back bitumen is produced by blending bitumen with
In using the data from a plate bearing test for determining the modulus of subgrade reaction, the value of settlement to be used is :
According to Darcy's law for flow through porous media, the velocity is proportional to
Compaction by vibratory roller is the best method of compaction in case of
The plan of stairs supported at each end by landings spanning parallel with risers is shown in the below figure. The effective span of staircase slab is
Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B ?
The consistency of a saturated cohesive soil is affected by
When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as
As per IS : 800-the minimum pitch of rivets in a row is recommended as the diameter of the rivet times
Permissible bending tensile stress in high yield strength deformed bars of gradeN/mm2 in a beam is :
At a rated capacity ofCumecs, a centrifugal pump developsm of head when operating atrpm. Its specific speed is :
In an area ofhectare, water table drops by 4 m. If the porosity is 0.and the specific retention is 0.change in volume of storage in the aquifer is
Chemical oxygen Demand (COD) of a sample is always greater than Biochemical Oxygen Demand (BOD) since it represents :
The most commonly used sampler for obtaining a disturbed sample of the soil is
Two primary air pollutants are
The ordinate of the Instantaneous Unit Hydrograph (IUH) of a catchment at any time t, is
A soil sample has a void ratio of 0.5 and its porosity will be close to
Presence of ifluoride in water greater than permissible level of 1.5 mg/l causes
The unit of dynamic viscosity of a fluid is
Flocculation is a process
Bending moments at joint b and c of the portal frame are respectively :
Please disable the adBlock and continue. Thank you.