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Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024)
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সকল বিষয়
বঙ্গবন্ধু শেখ মুজিবুর রহমান
মাওলানা আব্দুল হামিদ খান ভাসানী
Aerobic attached growth system
Anaerobic attached growth system
Anaerobic suspended growth system
contains pathogenic bacteria
Consists of undesirable substances making it unfit for its best use i.e. drinking
is safe and suitable for drinking and domestic use
increase in viscosity of gas
increase in viscosity of liquid
decrease in viscosity of gas
decrease in viscosity of liquid
gravitational pull exerted by the earth
forces experienced by body in atmosphere
force of attraction experienced by particles
gravitational force of attraction towards the center of the earth.
the center of gravity of the body and the meta center
the center of gravity of the body and the center of buoyancy
the center of gravity of the body and the center of pressure
center of buoyancy and metacenter.
helps growth of bacterias
increases dissolved oxygen content
The sewage when running full from inside, is called internal pressure
The internal pressure if any, causes tensile stress in the pipe material
Pressure sewers are designed to be safe in tension
Difference in heads between two points in circular pipes
Mean of radii in a pipe line of varying cross-sections
Cross-sectional area/wetted perimeter
Increasing the total perimeter of bars
Replacing larger bars by greater number of small bars
Replacing smaller bars by greater number of greater bars
Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinal reinforcement from buckling
Lateral reinforcement prevents the shearing of concrete on diagonal plane
Lateral reinforcement stops breaking away of concrete cover, due to buckling
Its dimensions are not decided from the diagonal tensile stress
Large size of long beams carrying large shear force need not be adopted
Removal of cracks in the members due to shrinkage
Not considered for calculating the upward pressure on footing
Also considered for calculating the upward pressure on footing
Not considered for calculating the area of the footing
the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
the point in a body about which it can rotate horizontally and oscillate under the influence of gravity.
flux density of the core material
circuits with low current densities
A galvanometer with low resistance in parallel is a voltmeter
A galvanometer with high resistance in parallel is a voltmeter
A galvanometer with low resistance in series is an ammeter
A galvanometer with high resistance in series is an ammeter
The current through each bulb is same
The voltage across each bulb is not same
The power dissipation in each bulb is not same
The teacher reached the classroom before the students came.
The teacher had reached the classroom before the students came.
The teacher reached the classroom before the students had come.
The teacher came to the classroom before the students come.
If you do not read properly you will fail.
If you will not read properly you will fail.
If you do not reads, you fail.
Read properly not to failed.
There are many tiger in the Sunderbans.
There are tigers in Sunderban.
Many tigers of Sunderbans.
There are many tigers in the Sunderbans.
Triangular load of the wall
UDL of wall + load from the roof
Triangular load + load from the roof
specific gravity = gravity x density
dynamicviscosity = kinematicviscosity x density
gravity = specific gravity x density
kinematicviscosity = dynamicviscosity x density