Environmental engineering-1
Previous year question paper with solutions for Environmental engineering-1
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- Define per capita demand. How is it useful in water supply scheme planning?
- Differentiate between shallow and deep wells. Compare the two from the quantity and quality point of view
- What are intakes? What are the essential components of an intake structure?
- Derive the basic equation to find out the break horse power (BHP) of the pump required to pump water at rate of Q m3/s against a dynamic head of H m.
- “Although conductivity does not have a water quality standard, it is considered as a parameter to assess water quality”. Why?
- Differentiate between available head and residual head.
- What is coagulation? What is the action of coagulants when added to raw water?
- What is the biological purification mechanism involved in a slow sand filter?
- Calculate the amount of bleaching powder of 30 percent available chlorine to be used to disinfect a flow of 3 lakh litres/d at a chlorine dose of 1 mg/L.
- What is the basic principle in the base-exchange process of water softening?
- Define design period. How is it decided in a water supply scheme planning?
- What is meant by fluctuations in demand? How is this information used for balancing tank design?
- List any four important factors on which site selection of Intake Structures depend.
- What is meant by economical diameter of a rising main?
- Give any four factors on which the coagulant dose depends.
- What is the biological purification mechanism involved in a slow sand filter?
- The groundwater available for domestic water consumption was found to have problems of taste, odour and excessive iron present. Suggest any two household level methods of purification this water.
- What is the basic principle in the base-exchange process of water softening?
- Give any four methods of waste prevention in water Supply, distribution system.
- What is meant by ‘rain water harvesting’?
- What is the efficiency of the pump?
- Name the methods of removing permanent hardness from water.
- What is characteristics curve?
- Differentiate between slow sand filter and pressure filter
- Name two physical water quality parameters and their importance in drinking water
- What is air valve? Where is it applied?
- What is flocculation?
- Name two criteria for selection of pump.
- List two advantages of rotary pump.
- What are the methods for disinfection of water?