4B Power Engineering - Final - Nait Knowledge Checks
Questions With Complete Solutions
________ have largely replaced the cast-iron radiator in modern
installations.
*A* unit heaters
*B* radiator traps
*C* open heaters
*D* convectors Correct Answers D
"An act respecting pollution prevention and the protection of the
environment and human health in order to contribute to
sustainable development" is called the:
*A* Canadian Environmental Protection Act
*B* Canadian Emergency Protection Agency
*C* Canadian Emergency Pollution Agency
*D* Canadian Environmental Pollution Accident Correct
Answers A
2 methods of calculating air infiltration into a building are:
*A* crack and solar
*B* air change and solar
*C* crack and conduction
*D* air change and crack Correct Answers D
A _________ adjustment rearranges the chemical structure of a
compound or mixture to create a different product or to improve
performance in the product:
,*A* solvent extraction
*B* fractionation
*C* chemical structure
*D* distillation Correct Answers C
A ___________ in a simple burner management system (BMS)
detects and amplify the flame signal, and permits the SSOV to
remain energized:
*A* flame relay
*B* programmable control
*C* primary control
*D* pilot relay Correct Answers A
A 2 TR unit is ______________________ tons of refrigeration.
*A* 1.814
*B* 2.2
*C* 233
*D* 3.877 Correct Answers B
A black light crack detection utilizes ultraviolet light and:
*A* iridescent powder
*B* an infrared solution
*C* a radium solution
*D* fluorescent penetrant Correct Answers D
A blowdown ring is used on a safety valve to:
,*A* Adjust the operating pressure of the valve
*B* Prevent the safety valve from popping while blowing down
the boiler
*C* Increase the blowdown frequency of the safety valve
*D* Adjust the differential between opening and closing
pressures Correct Answers D
A boiler boil-out
*A* is done with an alkaline solution.
*B* must be done annually.
*C* is done before curing the refractory.
*D* is done at 1.5 times the maximum allowable working
pressure. Correct Answers A
A boiler furnace pre-purge:
*A* happens after the ignition transformer is energized.
*B* can occur even if the boiler has a low water condition.
*C* happens only when the draft fans are at low speed.
*D* must last a specific amount of time. Correct Answers D
A boiler inspection:
*A* must be done after every shutdown of a boiler
*B* must be done before closing up and filing the boiler
*C* must be done every two years
*D* must be done before the boiler is ready for start-up Correct
Answers B
A boiler pressure explosion:
, *A* Could be the result of water in the fuel oil
*B* Could be the result of inadequate ignition
*C* May be caused by a low water condition
*D* Could result from a defective flame scanner Correct
Answers C
A boiler with a single safety valve has a maximum allowable
working pressure of 1000 kPa. What is the maximum boiler
pressure permissible when the safety valve is blowing?
*A* 1060 kPa
*B* 1000 kPa
*C* 1030 kPa
*D* 1100 kPa Correct Answers A
A chisel used to turn out studs and broken pipe nipples is the:
*A* cold chisel
*B* cape chisel
*C* diamond chisel
*D* round nose chisel Correct Answers C
A closed cycle gas turbine:
*A* does not need a combustion chamber
*B* must use a cooler before the regenerator
*C* will use the same working fluid over again
*D* is a self-starting type gas turbine Correct Answers C
A closed expansion tank is usually equipped with a:
Questions With Complete Solutions
________ have largely replaced the cast-iron radiator in modern
installations.
*A* unit heaters
*B* radiator traps
*C* open heaters
*D* convectors Correct Answers D
"An act respecting pollution prevention and the protection of the
environment and human health in order to contribute to
sustainable development" is called the:
*A* Canadian Environmental Protection Act
*B* Canadian Emergency Protection Agency
*C* Canadian Emergency Pollution Agency
*D* Canadian Environmental Pollution Accident Correct
Answers A
2 methods of calculating air infiltration into a building are:
*A* crack and solar
*B* air change and solar
*C* crack and conduction
*D* air change and crack Correct Answers D
A _________ adjustment rearranges the chemical structure of a
compound or mixture to create a different product or to improve
performance in the product:
,*A* solvent extraction
*B* fractionation
*C* chemical structure
*D* distillation Correct Answers C
A ___________ in a simple burner management system (BMS)
detects and amplify the flame signal, and permits the SSOV to
remain energized:
*A* flame relay
*B* programmable control
*C* primary control
*D* pilot relay Correct Answers A
A 2 TR unit is ______________________ tons of refrigeration.
*A* 1.814
*B* 2.2
*C* 233
*D* 3.877 Correct Answers B
A black light crack detection utilizes ultraviolet light and:
*A* iridescent powder
*B* an infrared solution
*C* a radium solution
*D* fluorescent penetrant Correct Answers D
A blowdown ring is used on a safety valve to:
,*A* Adjust the operating pressure of the valve
*B* Prevent the safety valve from popping while blowing down
the boiler
*C* Increase the blowdown frequency of the safety valve
*D* Adjust the differential between opening and closing
pressures Correct Answers D
A boiler boil-out
*A* is done with an alkaline solution.
*B* must be done annually.
*C* is done before curing the refractory.
*D* is done at 1.5 times the maximum allowable working
pressure. Correct Answers A
A boiler furnace pre-purge:
*A* happens after the ignition transformer is energized.
*B* can occur even if the boiler has a low water condition.
*C* happens only when the draft fans are at low speed.
*D* must last a specific amount of time. Correct Answers D
A boiler inspection:
*A* must be done after every shutdown of a boiler
*B* must be done before closing up and filing the boiler
*C* must be done every two years
*D* must be done before the boiler is ready for start-up Correct
Answers B
A boiler pressure explosion:
, *A* Could be the result of water in the fuel oil
*B* Could be the result of inadequate ignition
*C* May be caused by a low water condition
*D* Could result from a defective flame scanner Correct
Answers C
A boiler with a single safety valve has a maximum allowable
working pressure of 1000 kPa. What is the maximum boiler
pressure permissible when the safety valve is blowing?
*A* 1060 kPa
*B* 1000 kPa
*C* 1030 kPa
*D* 1100 kPa Correct Answers A
A chisel used to turn out studs and broken pipe nipples is the:
*A* cold chisel
*B* cape chisel
*C* diamond chisel
*D* round nose chisel Correct Answers C
A closed cycle gas turbine:
*A* does not need a combustion chamber
*B* must use a cooler before the regenerator
*C* will use the same working fluid over again
*D* is a self-starting type gas turbine Correct Answers C
A closed expansion tank is usually equipped with a:
