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define hardness - chemical characteristics of watercaused by any polyvalent cations mainly calcium and magnesium expressed as mgl as caco3 causes
acidity and alkalinity - chemical characteristics of wateraciditycapacity to neutralize bases and is a measure of acids in water acidity is measured
define major ions present in the water cations calcium magnesium sodium potassiumanions bicorabonate sulfate chlorideother ions present iron
the following test results were obtained for a 100 ml wastewater sample taken at the inlet to wastewater treatment plant the tests were performed
the most probable value of the following observations on the same angle 35ordm 17 42 35ordm 17 38 35ordm 18 00 35ordm 17 22 35ordm 17 42 is
if the standard deviation of an observation is plusmn 10-ft the most probable error would bethe most probable error is defined as the error for which
geotechnical project specifications require that the soils optimum moisture content of 24 be maintained during the roadbeds construction the
gated patternthis is an improvement over the simple pattern where the gating and runner system are integral with the pattern this would eliminate the
types of patternsthere are various types of patterns depending upon the complexity of the job the number of castings required and the moulding
pattern materialsthe requirements of pattern are secure the desired shape and size of the casting cheap and readily available light in mass and
brazing vs weldingfollowing are the differences between brazing and weldingi in brazing the joint surfaces are not raised to fusion point or
sheet rock cannot be installed in the new house you are building until a building inspector approves the plumbing electrical hvac and insulation
a finish-to-finish activity is best described asthe from activity must finish before the to activity can finishthe from activity must finish before
schedule control is concerned with all of the following except a influencing the factors which create schedule changesb determining that the schedule
common ways to present the project schedule include all excepta gantt chartsb milestone chartsc pert chartsd project network diagrams with dates
calculate roller productionan excavating contractor determined through a test strip that a smooth steel-wheel vibrating roller compactor operating at
brazing is a technique of joining two similar of dissimilar metal pieces together by heating the surfaces and by using a non-ferrous filler metal
types of gas welding processgas welding includes all those welding processes in which gas flame is used as a heat source for melting metals it is
gas welding is a method of joining two metal pieces similar or dissimilar together by melting and fusing their edges at the joint it involves
advantages of welding processwelding results in a good saving of material and reduced labour content of production low manufacturing costs
applications the welding process finds widespread applications in almost all branches of industry and construction
welding processthere are many definition of a welding process but the most comprehensive definition is belowwelding is defined as a a localized
assembly processesthe assembly process for machines and mechanisms is the part of the manufacturing process concerned with the consecutive joining of
heat treatment and surface treatment processes heat treatment processes are employed to improve of a work piece the category includes the processes
power metallurgy- the more appropriate name should be particulate processing methods here the particles of various sizes of metals ceramics polymers