Book3 Unit 7 Flashcards
The adverse conditions that can occur within the boiler are caused by all of the following except:
A) Organics
B) Suspended solids
C) Dissolved solids
D) Suspended gases
E) Dissolved gases
D) Suspended gases
When using a meter to conduct a pH water test, the meter used would:
A) Measure the wattage used
B) Require a long warm-up period
C) Have to be separately grounded
D) Basically measure amperage
E) Be, in effect, a voltmeter
E) Be, in effect, a voltmeter
Temporary hardness in water is caused by:
A) Calcium and/or magnesium bicarbonates
B) Suspended solids
C) Calcium and magnesium sulphates
D) Sulphates and bicarbonates
E) Sodium chloride and/or hydroxide
A) Calcium and/or magnesium bicarbonates
A plunger pump is a ________ pump.
A) Centrifugal
B) Gear
C) Vane
D) Lobe
E) Reciprocating
E) Reciprocating
With zeolite filters it is easy to flush much zeolite down the drain during the _________ cycle.
A) Backwash
B) Service
C) Rinse
D) Regeneration
E) Injection
A) Backwash
Common methods of removing suspended solids from boiler make-up water are:
A) Coagulators and softeners
B) Deaerators and scrubbers
C) Settling tanks and filters
D) Softeners and settling tanks
E) Evaporators and screens
C) Settling tanks and filters
The “radical” in the boiler feedwater that indicates “permanent hardness” is the:
A) Zeolite
B) Sulphate
C) Bicarbonate
D) Polymer
E) Resin
B) Sulphate
Organics if allowed to enter the boiler will:
A) Cause foaming in the boiler
B) Settle in lower areas interfering with proper heat transfer and circulation
C) Precipitate out of solution
D) Cause corrosion in the boiler
E) End up somewhere such as heat exchanger surfaces or turbine blading
A) Cause foaming in the boiler
The filtration method of water treatment will:
A) Soften the water
B) Remove suspended liquids
C) Act to remove suspended solids
D) Remove dissolved gases
E) Act to remove suspended gases
C) Act to remove suspended solids
A reagent is a substance which, on account of its known chemical properties, is employed to produce specific reactions in combination with the ____________ of the water sample.
A) Density
B) Specific temperature
C) Time
D) Oxygen
E) Particular constituents
E) Particular constituents
An example of medium hard water would have a range of hardness to be expected in ppm of:
A) 15 to 60
B) 0 to 15
C) 61 to 120
D) 121 to 180
E) Over 181
C) 61 to 120
Shot feeding involves the injection of boiler water treatment chemicals over a:
A) Twelve hour period
B) Relatively long period of time
C) Twenty-four hour period
D) Relatively short period of time
E) Eight hour period
D) Relatively short period of time
Calcium sulphate in the boiler feedwater produces:
A) Temporary hardness, high solubility
B) Temporary hardness, low solubility
C) Permanent hardness, low solubility
D) Permanent hardness, high solubility
E) Temporary hardness and permanent hardness
C) Permanent hardness, low solubility
Large facilities will have a lab on site to carry out the water testing by conducting all of the following tests except:
A) Turbidity (clarity)
B) Total dissolved solids (TDS)
C) pH (acidity/alkalinity) value
D) Dye penetrant
E) Odour levels
D) Dye penetrant
An indicator is a solution that will change colour as the chemical properties of the ________ change.
A) Condensates
B) Oil
C) Water
D) Steam
E) Air
C) Water
