Transformation of stress and strain - Stength of material

Transformation of stress and strain - Stength of material

✔ Vk on November 15, 2023 0 Comment

 Transformation of stress and strain 

Civil Engineering Questions

Radius of Mohr Circle

Radius of Mohr circle
Radius of Mohr Circle

Principal Stress and maximum shear stress:-  

  • It is the maximum or minimum normal stress which may be developed on a loaded body. The plane of principal stress does not carry any shear stress.
  • Mohr’s Circle for plane stress o It is the locus of points representing the magnitude of normal and shear stress at various plane in a given stress element.
Principal stress and Max Shear stress



Principal stress
Principal Stress

Normal Stress

Normal stress
Normal Stress

Mohr circle for uniaxial loading condition
Mohr circle for uniaxial loading condition

Minimum Principal Stress

Minimum principal stress


Diameter of Mohr Circle

Diameter of Mohr circle


Normal stress and Resultant stress on plane of Maximum shear stress

Normal strss and Resultant stress on plane of maximum shear stress
Normal strss and Resultant stress on plane of maximum shear stress











Bending Stress in Beam Questions - Strength of Material - civil engineering

Bending Stress in Beam Questions - Strength of Material - civil engineering

✔ Vk on November 12, 2023 0 Comment

 Bending stress in Beam - Strength of Material

CIVIL ENGINEERING QUESTIONS

Previous year civil engineering questions related to strength of material (SOM) subject topic Bending stress in Beam asked in UPSC ESE examination. 






Section Modulus of Important section

section modulus of rectangular,solid circular, hollow circular and triangular section
section modulus of rectangular,solid circular, hollow circular and triangular section



Parallel Axis theorem
Parallel Axis theorem
Parallel Axis theorem


Perpendicular Axis theorem

Perpendicular Axis theorem
Perpendicular Axis theorem

Flexural Formula

Flexural formula for Bending stress in beam
Flexural formula for Bending stress in beam






Question-Answer civil engineering study
Question-Answer civil engineering study






Shear stress in beam Questions - Strength of Material civil engineering

Shear stress in beam Questions - Strength of Material civil engineering

✔ Vk on November 12, 2023 0 Comment

 Shear stress in Beam - Strength of Material

CIVIL ENGINEERING QUESTIONS

Question-Answer civil engineering study
Question-Answer civil engineering study

Previous year civil engineering questions related to strength of material (SOM) subject topic shear stress in Beam asked in UPSC ESE examination. 






Shear Force per unit length = `H/x` = `(VAy)/I`
Shear stress at the level y from N.A. = q = `(VAy)/Ib`

Shear stress in Rectangular beam
Shear stress in rectangular beam
Shear stress in rectangular beam

Shear stress in I section

shear stress in I section
shear stress in I section

Shear stress in circular section

shear stress in circular section
shear stress in circular section

Shear stress in triangular section

Shear stress in triangular section
Shear stress in triangular section


Shear stress in Quadrilateral section about diagonal

Shear stress in Quadrilateral section about diagonal














ESE Qustions Columns - Strength of Material

ESE Qustions Columns - Strength of Material

✔ Vk on November 11, 2023 0 Comment

 COLUMN - STRENGTH OF MATERIAL

Question-Answer civil engineering study
Question-Answer civil engineering study

CIVIL ENGINEERING QUESTIONS

Previous year civil engineering questions related to strength of material (SOM) subject topic columns asked in UPSC ESE examination. 













https://drive.google.com/file/d/1Kn-OE25qNawxv97w2K29IRAc7fYcXJdT/view
Quality parameter of Water

Quality parameter of Water

✔ Vk on November 10, 2023 0 Comment

 Physical properties or Quality parameter of Water

  • Suspended Solids
  • Turbidity
  • Color
  • Taste and Odour
  • Temperature

Suspended Solids

Suspended Solids
Physical quality of Drinking water


Turbidity


Turbidity
Physical quality of Drinking water


Colour

Colour
Physical quality of Drinking water


Taste and Odour

Taste and Odur - Physical quality of Drinking water


Chemical properties or Quality Parameter of Water

  • Total Dissolved solids (TDS)
  • Alkalinity
  • pH
  • Hardness
  • Chloride Content
  • Nitrogen content
  • Phosphorus
  • Fluorides
  • Metals
  • Dissolved Gases
Pipe Appurtenances Valve and Joint in Water supply Piping

Pipe Appurtenances Valve and Joint in Water supply Piping

✔ Vk on November 10, 2023 0 Comment

Pipe Appurtenances - Valve 

Check Valve: 

  • These valves are used to check the flow of water in reverse direction. 
  • These are generally provided on the delivery side of the pump. These valves work automatically.

Pressure reducing valve:  

  • In hydraulics, a pressure reducing valve serves the same purpose as a "pressure regulator" valve in a compressed air system. 
  • It is one of a variety of pressure control valves available for hydraulic circuits. It is always used in a branch circuit and never in the full pump flow line.

Air Relief Valve: 

  • it is a type of safety valve used to control or limit the pressure in a system, pressure might otherwise build up and create a process upset, instrument or equipment failure, or fire. 
  • The pressure is relieved by allowing the pressurised fluid to flow from an auxiliary passage out of the system.

Air Valve: 

  • Provided at summits to release air pressure.

Relief Valve or Safety valve or cut-off Valve:

  • Helps in regulating the water hammer pressure.

Scour valve: 

  • This valve is used to drain the water out of the pipe system.

Sluice valve: 

  • These valves are used to regulate the flow of water in the pipe system by dividing into number of sections.

Foot Valve: 

  • Prevent entry of debris into the pumping system and prevent back flow.

Butterfly valve:

  • Regulate and Stop the flow specially in large size conduits.

Globe Valve: 

  • Direction of Flow changes by 90° twice

Surge arrestor: 

  • Control of water hammer in pipe lines by absorbing surge energy.

Joint in Water Supply Piping:

Flexible joint: 

  • Where Settlement of pipe line can occur.

Threaded joint:

  • Recommended for connecting the GI pipes.

Simplex joint: 

  • For joining asbestos cement pipes.

Flanged joint: 

  • Recommended for temporary work where the pipe line is to be dismantled after work or to be shifted.

Expansion joint: 

  • Provided at suitable intervals to take into account the change in pipe length due to temperature variations.

Collar joint: 

  • Recommended for joining R.C.C pipes and asbestos cement pipes.

Spigot and socket joint: 

  • Also known as Bell-spigot joint. Where spigot end is inserted into the bell end.

Joint in water supply Piping.jpg
Joint in water supply Piping.jpg








Rapidly Varied Flow - Hydraulic Jump

Rapidly Varied Flow - Hydraulic Jump

✔ Vk on November 10, 2023 0 Comment

Rapidly Varied Flow - Hydraulic Jump

  • In rapidly varied flow, a sudden change in depth occurs at a particular stretch of a channel and the change from one depth to another takes place in a distance of very short length.
  • Hydraulic Jump is a formed when water moving at super critical velocity in a relatively shallow stream strikes water having large depth and sub critical velocity.
  • Applications of hydraulic jump are as energy dissipator, to mix chemicals, desalination of sea water, to aerate polluted stream, to reduce the uplift pressure.

Sequent depth or conjugate depth: 

  • During hydraulic jump, water generates considerable disturbances in the form  of eddies and reverse flow rollers. Because of this jump falls shorts of  attaining alternate depth (y3) and  attain’s another depth (y2 < y3) called  conjugate depth.

Horizontal Jump in horizontal frictionless rechtangular channel

Horizontal Jump in horizontal frictionless rechtangular channel
Horizontal Jump in horizontal frictionless rechtangular channel