1|Page
4TH CLASS POWER ENGINEERING PART A
EXAM | COMPREHENSIVE Q&A FOR
GUARANTEED SUCCESS
CFCs -correct-answer-Chlorofluorocarbons , A pollutant that is particularly
harmful to the earth's ozone layer
Carbon Dioxide -correct-answer-Is the principle greenhouse gas
Gaseous Pollutants -correct-answer-Carbon Monoxide, Sulfur Dioxide
Two Stage Combustion -correct-answer-Most effective method of controlling the
formation of NOx in a boiler's combustion process
Reducing Excess Air -correct-answer-May reduce Nitrogen oxides in flue gasses
Sulfur Oxides -correct-answer-Contribute to acid rain
,2|Page
Plant Trees -correct-answer-Simplest method of removing excessive carbon
dioxide from the atmosphere
Incineration -correct-answer-Best way to dispose of hazardous liquids
Pulverized Coal -correct-answer-Creates solid pollutants such as fly ash when
burned
Thermoclines -correct-answer-Thermally separated layers in lakes
Effluent -correct-answer-A substance that flows out of a process
Centrifugal Separators -correct-answer-How oil is commonly removed from a
waste stream
,3|Page
Electrostatic Precipitator Collector Electrodes -correct-answer-Have a positive
electrical charge applied to them
Chemical Emulsions -correct-answer-Can be removed by additives, gravity,
settling, or centrifugal action
Settling Ponds -correct-answer-Used to removed suspended particular matter
Flyash -correct-answer-Is a very fine powder
Globe Valve -correct-answer-Can be used to throttle flow , Has more restriction
than a gate valve
Typical Gaskets Used in Flange Connections -correct-answer-Full-face, Flat ring,
Ring joint
Markings on Power Plant Valves -correct-answer-Must have at least the Service
designation, Manufacturer's name, Material designation
, 4|Page
Cast Iron -correct-answer-Has a high resistance to corrosion and abrasion , Useful
in Ash Handling systems
Wall Thickness of Pipe -correct-answer-Dimensions are given in mass per meter in
kilograms
Commercial Pipe -correct-answer-Made in standard sizes but have several
different weights and thicknesses
Seamless and Welded -correct-answer-Two main categories of manufactured
steel piping
2000kPa -correct-answer-A bellows corrugated expansion joint suitable pressure
Inside Diameter -correct-answer-All pipe classes with the same nominal pipe size
will have the same...
4TH CLASS POWER ENGINEERING PART A
EXAM | COMPREHENSIVE Q&A FOR
GUARANTEED SUCCESS
CFCs -correct-answer-Chlorofluorocarbons , A pollutant that is particularly
harmful to the earth's ozone layer
Carbon Dioxide -correct-answer-Is the principle greenhouse gas
Gaseous Pollutants -correct-answer-Carbon Monoxide, Sulfur Dioxide
Two Stage Combustion -correct-answer-Most effective method of controlling the
formation of NOx in a boiler's combustion process
Reducing Excess Air -correct-answer-May reduce Nitrogen oxides in flue gasses
Sulfur Oxides -correct-answer-Contribute to acid rain
,2|Page
Plant Trees -correct-answer-Simplest method of removing excessive carbon
dioxide from the atmosphere
Incineration -correct-answer-Best way to dispose of hazardous liquids
Pulverized Coal -correct-answer-Creates solid pollutants such as fly ash when
burned
Thermoclines -correct-answer-Thermally separated layers in lakes
Effluent -correct-answer-A substance that flows out of a process
Centrifugal Separators -correct-answer-How oil is commonly removed from a
waste stream
,3|Page
Electrostatic Precipitator Collector Electrodes -correct-answer-Have a positive
electrical charge applied to them
Chemical Emulsions -correct-answer-Can be removed by additives, gravity,
settling, or centrifugal action
Settling Ponds -correct-answer-Used to removed suspended particular matter
Flyash -correct-answer-Is a very fine powder
Globe Valve -correct-answer-Can be used to throttle flow , Has more restriction
than a gate valve
Typical Gaskets Used in Flange Connections -correct-answer-Full-face, Flat ring,
Ring joint
Markings on Power Plant Valves -correct-answer-Must have at least the Service
designation, Manufacturer's name, Material designation
, 4|Page
Cast Iron -correct-answer-Has a high resistance to corrosion and abrasion , Useful
in Ash Handling systems
Wall Thickness of Pipe -correct-answer-Dimensions are given in mass per meter in
kilograms
Commercial Pipe -correct-answer-Made in standard sizes but have several
different weights and thicknesses
Seamless and Welded -correct-answer-Two main categories of manufactured
steel piping
2000kPa -correct-answer-A bellows corrugated expansion joint suitable pressure
Inside Diameter -correct-answer-All pipe classes with the same nominal pipe size
will have the same...
