City Of Omaha 3rd Grade N.A.P.E. Stationary
Engineers Test Questions And Answers
How can you lose your license?
Drinking on the job / sleeping on the job / negligence / unsafe work / failing to renew
your license annually / signing a falsified licensing application for someone
What must you do if you change jobs?
You must notify city hall if you change jobs, change your address or if you retire
Why should you do rounds?
You do rounds so that you can find and correct problems to prevent break downs.
Keeping permanent records will make it easier to forecast most breakdowns because
you will get to know your equipment.
What is a steam Boiler?
A steam boiler is a closed vessel PARTIALLY FILLED with water, under pressure, that
transforms water into steam with the application of heat.
What are requirements of a good boiler?
1. simple
,2. designed to accommodate expansion and contraction
3. adequate steam and water space
4. efficient
5. responsive to demands
6. accessible for cleaning and repair
7. safe
Name and describe three types of heat transfer used in boiler operation.
RADIANT HEAT-is heat radiated from a hot to cold body and depends on the
temperature difference and the color of the body that receives the heat. The heat from
the sun reaches us by means of radiation.
CONDUCTION HEAT-is heat that passes from the gas to the tube by physical contact. The
heat passes from molecule of metal to molecule of metal with no displacement of the
molecules.
CONVECTION HEAT-is heat transmitted from a hot to cold body by movement of the
conveying substance.
What is a combustion chamber?
The area of a boiler where the burning of fuel occurs
What is an internally fired boiler and name 4 types.
, Internally fired boilers are those in which the grate and combustion chamber are
enclosed within the boiler shell.
Scotch Marine
Cast iron package
Steam locomotive
Vertical fire tube
What is an externally fired boiler and name 4 types.
Externally fired boiler is a boiler in which the setting, including furnace and grates are
separate and distinct from the boiler shell.
Horizontal return tube set on brick
Heine
Cast iron set on brick
Sterling water tube
What is a crown sheet and what is its purpose? What is a tube sheet and what is its
purpose?
The crown sheet in a vertical fire tube boiler holds the tubes and is thicker because it is
exposed to fire.
The tube sheet holds the tubes and does not see the fire.
Engineers Test Questions And Answers
How can you lose your license?
Drinking on the job / sleeping on the job / negligence / unsafe work / failing to renew
your license annually / signing a falsified licensing application for someone
What must you do if you change jobs?
You must notify city hall if you change jobs, change your address or if you retire
Why should you do rounds?
You do rounds so that you can find and correct problems to prevent break downs.
Keeping permanent records will make it easier to forecast most breakdowns because
you will get to know your equipment.
What is a steam Boiler?
A steam boiler is a closed vessel PARTIALLY FILLED with water, under pressure, that
transforms water into steam with the application of heat.
What are requirements of a good boiler?
1. simple
,2. designed to accommodate expansion and contraction
3. adequate steam and water space
4. efficient
5. responsive to demands
6. accessible for cleaning and repair
7. safe
Name and describe three types of heat transfer used in boiler operation.
RADIANT HEAT-is heat radiated from a hot to cold body and depends on the
temperature difference and the color of the body that receives the heat. The heat from
the sun reaches us by means of radiation.
CONDUCTION HEAT-is heat that passes from the gas to the tube by physical contact. The
heat passes from molecule of metal to molecule of metal with no displacement of the
molecules.
CONVECTION HEAT-is heat transmitted from a hot to cold body by movement of the
conveying substance.
What is a combustion chamber?
The area of a boiler where the burning of fuel occurs
What is an internally fired boiler and name 4 types.
, Internally fired boilers are those in which the grate and combustion chamber are
enclosed within the boiler shell.
Scotch Marine
Cast iron package
Steam locomotive
Vertical fire tube
What is an externally fired boiler and name 4 types.
Externally fired boiler is a boiler in which the setting, including furnace and grates are
separate and distinct from the boiler shell.
Horizontal return tube set on brick
Heine
Cast iron set on brick
Sterling water tube
What is a crown sheet and what is its purpose? What is a tube sheet and what is its
purpose?
The crown sheet in a vertical fire tube boiler holds the tubes and is thicker because it is
exposed to fire.
The tube sheet holds the tubes and does not see the fire.
