Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
Carbon that is not combined with hydrogen is referred to
as:
Select one:
a. Mono-carbon D
b. Separated carbon
c. Free carbon
d. Fixed carbon
As a general rule the size of the condensate receiver
should be large enough to hold a volume of condensate
equal to the water evaporated by the boiler in a
period.
Select one: D
a. One and one half hour
b. One hour
c. 45 minute
d. 20 to 30 minute
Soot blowers are essential equipment on a boiler fired
with:
Select one:
a. Natural gas B
b. Solid fuels
c. Propane
d. Butane
The power requirements for the FD fan of a fluidized
bed boiler are times than other boiler
designs?
C
Select one:
a. 4, more
b. 1.5, less
,Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
c. 3, more
d. 1.5, more
Inlet damper control on a fan:
Select one:
a. Is far less complicated than outlet damper control.
b. Is only used on forced draft fans. C
c. Requires less power to drive the fan at reduced loads.
d. Requires more power to drive the fan when the vanes
are closed.
Heating plants with multiple boilers may have:
Select one:
A common feedwater control valve
a. D
b. Separate condensate receivers
c. Individual feedwater systems
d. Independent boiler feedwater controls
The fan blows combustion air into the wind box
of a boiler.
Select one:
a. Balanced draft B
b. Forced draft
c. Induced draft
d. High pressure
Combustion of fuel in a boiler furnace:
Select one:
Requires a higher air-fuel ratio than a diesel engine
a. B
b. Should occur with a minimum of excess air
c. Is perfect when the stack gases are free of moisture
d. Requires mechanical draft
A modulating pressure atomizer has its return oil flow
regulated by:
,Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
Select one:
a. A pressure regulator
b. A solenoid valve in the return line C
c. A firing rate control valve in the return line
d. A modulating valve to the burner
The advantage of a steel stack over a reinforced concrete
stack is that a steel stack:
Select one:
a. Has longer life B
b. Has lower cost
c. Requires less maintenance
d. Is more durable
Large capacity burners:
Select one:
must not have full flow of fuel on startup
a. A
b. Are very safe relative to putt-back
c. Require only a small pilot flame
d. Require high flow on ignition
A steam boiler must be equipped with two low water fuel
cut-ott devices when the boiler:
Select one:
a. Has two burners B
b. Is not continuously attended
c. Has dual fuels
d. Has over 47 m² of heating surface
A device that normally uses air or steam to do its job is
the:
Select one: D
a. Siphon
b. Operating control
, Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
c. Burner
d. Soot blower
The amount of air required to supply just enough oxygen
for complete combustion is called the:
Select one:
a. Excess air D
b. Perfect air
c. Primary air
d. Theoretical air
A characteristic of mechanical draft is that the draft:
Select one:
Is properly regulated during all firing conditions
a. A
b. Varies with chimney temperature
c. Varies with chimney height
d. Varies with atmospheric pressure
The major disadvantages of oil over coal is that oil:
Select one:
Does not burn as clean
a. C
b. Is more diflcult to control
c. Is more expensive and less abundant
d. Requires more storage space
Which of the following burner designs is NOT used for
burning oil?
Select one:
a. Stoker-type burner A
b. Steam atomizing burner
c. Air atomizing burner
d. Mechanical atomizing burner
he approximate amount of excess oxygen for combustion
of a gaseous fuel is:
Answers
Carbon that is not combined with hydrogen is referred to
as:
Select one:
a. Mono-carbon D
b. Separated carbon
c. Free carbon
d. Fixed carbon
As a general rule the size of the condensate receiver
should be large enough to hold a volume of condensate
equal to the water evaporated by the boiler in a
period.
Select one: D
a. One and one half hour
b. One hour
c. 45 minute
d. 20 to 30 minute
Soot blowers are essential equipment on a boiler fired
with:
Select one:
a. Natural gas B
b. Solid fuels
c. Propane
d. Butane
The power requirements for the FD fan of a fluidized
bed boiler are times than other boiler
designs?
C
Select one:
a. 4, more
b. 1.5, less
,Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
c. 3, more
d. 1.5, more
Inlet damper control on a fan:
Select one:
a. Is far less complicated than outlet damper control.
b. Is only used on forced draft fans. C
c. Requires less power to drive the fan at reduced loads.
d. Requires more power to drive the fan when the vanes
are closed.
Heating plants with multiple boilers may have:
Select one:
A common feedwater control valve
a. D
b. Separate condensate receivers
c. Individual feedwater systems
d. Independent boiler feedwater controls
The fan blows combustion air into the wind box
of a boiler.
Select one:
a. Balanced draft B
b. Forced draft
c. Induced draft
d. High pressure
Combustion of fuel in a boiler furnace:
Select one:
Requires a higher air-fuel ratio than a diesel engine
a. B
b. Should occur with a minimum of excess air
c. Is perfect when the stack gases are free of moisture
d. Requires mechanical draft
A modulating pressure atomizer has its return oil flow
regulated by:
,Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
Select one:
a. A pressure regulator
b. A solenoid valve in the return line C
c. A firing rate control valve in the return line
d. A modulating valve to the burner
The advantage of a steel stack over a reinforced concrete
stack is that a steel stack:
Select one:
a. Has longer life B
b. Has lower cost
c. Requires less maintenance
d. Is more durable
Large capacity burners:
Select one:
must not have full flow of fuel on startup
a. A
b. Are very safe relative to putt-back
c. Require only a small pilot flame
d. Require high flow on ignition
A steam boiler must be equipped with two low water fuel
cut-ott devices when the boiler:
Select one:
a. Has two burners B
b. Is not continuously attended
c. Has dual fuels
d. Has over 47 m² of heating surface
A device that normally uses air or steam to do its job is
the:
Select one: D
a. Siphon
b. Operating control
, Power Engineering 4a - Unit 12 - Elements of a boiler system Test with
Answers
c. Burner
d. Soot blower
The amount of air required to supply just enough oxygen
for complete combustion is called the:
Select one:
a. Excess air D
b. Perfect air
c. Primary air
d. Theoretical air
A characteristic of mechanical draft is that the draft:
Select one:
Is properly regulated during all firing conditions
a. A
b. Varies with chimney temperature
c. Varies with chimney height
d. Varies with atmospheric pressure
The major disadvantages of oil over coal is that oil:
Select one:
Does not burn as clean
a. C
b. Is more diflcult to control
c. Is more expensive and less abundant
d. Requires more storage space
Which of the following burner designs is NOT used for
burning oil?
Select one:
a. Stoker-type burner A
b. Steam atomizing burner
c. Air atomizing burner
d. Mechanical atomizing burner
he approximate amount of excess oxygen for combustion
of a gaseous fuel is:
