MD STATIONARY ENGINEER GRADE 1 ACTUAL
EXAM PAPER 2026
◉ what must you do if you change jobs? Answer: notify city hall if
you change jobs, address or retire
◉ why should you do rounds? Answer: Find and correct problems to
prevent breakdowns. keeping permanent records will make it easy
to forecast most breakdowns because you will get to know
equipment
◉ what is a steam boiler? Answer: closed vessel, PARTIALLY FILLED
WITH WATER, under pressure that transforms water to steam with
the application of heat.
◉ what are the requirements of a good boiler? Answer: 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 repairs
7) safe
,◉ Name and describe 3 types of heat transfer used in boiler
operation Answer: 1) RADIANT HEAT - transmitted from hot body to
a cold body by means of direct radiation (heat from sun reaches us
by radiation)
2) CONDUCTION - physical contact (coffee cup is heated by
conduction when hot coffee touches the cup)
3) CONVECTION - carried along by a moving part such as air or
water (your living room is heated by warm air from your furnace in
another location
◉ what is a combustion chamber? Answer: the area of the boiler
where COMPLETE burning of the fuel occurs
◉ what is an internally fired boiler?
-----
name 4 types Answer: those in which the grate and combustion
chamber are enclosed within the boiler shell.
-----
1) Scotch marine
2) Vertical firetube
3) Locomotive
4) Cast iron package boiler
,◉ what is an externally fired boiler
-----
name 4 types Answer: the setting, including the furnace and grates is
separate and distinct from the boiler shell.
-----
1) horizontal return tubular (HRT) set in brick
2) some watertube
3) cast iron set in brick
4) Stirling boiler
5) Heine boiler
◉ what is a crown sheet and its purpose?
-----
what is a tube sheet and its purpose? Answer: in a vertical firetube
boiler holds the tubes and is thicker because it is exposed to the fire.
-----
holds the tubes and does not see the fire
◉ what is a waterleg on a boiler? Answer: space between the outer
shell and the furnace containing boiler water. it absorbs heat that
would be wasted and increases the capacity of the boiler. the
surfaces are flat and must be stayed.
, ◉ is an HRT Boiler set level or inclined and why?
-----
are HRT Boiler tubes set level or inclined and why? Answer:
INCLINED 1-3" front to rear to permit drainage and removal of
water impurities
-----
INCLINED with the boiler
◉ Name 2 way to support and take care of expansion of an HRT
Boiler
-----
Which way is best? Answer: 1) Suspended from hangars and
supported by overhead beams
2) Set on saddles equipped with rollers to permit movement of the
boiler as it expands and contracts
-----
Suspended from hangars and supported by overhead beams is best
because it works no hardship on the furnace walls
◉ what is a longitudinal joint?
-----
EXAM PAPER 2026
◉ what must you do if you change jobs? Answer: notify city hall if
you change jobs, address or retire
◉ why should you do rounds? Answer: Find and correct problems to
prevent breakdowns. keeping permanent records will make it easy
to forecast most breakdowns because you will get to know
equipment
◉ what is a steam boiler? Answer: closed vessel, PARTIALLY FILLED
WITH WATER, under pressure that transforms water to steam with
the application of heat.
◉ what are the requirements of a good boiler? Answer: 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 repairs
7) safe
,◉ Name and describe 3 types of heat transfer used in boiler
operation Answer: 1) RADIANT HEAT - transmitted from hot body to
a cold body by means of direct radiation (heat from sun reaches us
by radiation)
2) CONDUCTION - physical contact (coffee cup is heated by
conduction when hot coffee touches the cup)
3) CONVECTION - carried along by a moving part such as air or
water (your living room is heated by warm air from your furnace in
another location
◉ what is a combustion chamber? Answer: the area of the boiler
where COMPLETE burning of the fuel occurs
◉ what is an internally fired boiler?
-----
name 4 types Answer: those in which the grate and combustion
chamber are enclosed within the boiler shell.
-----
1) Scotch marine
2) Vertical firetube
3) Locomotive
4) Cast iron package boiler
,◉ what is an externally fired boiler
-----
name 4 types Answer: the setting, including the furnace and grates is
separate and distinct from the boiler shell.
-----
1) horizontal return tubular (HRT) set in brick
2) some watertube
3) cast iron set in brick
4) Stirling boiler
5) Heine boiler
◉ what is a crown sheet and its purpose?
-----
what is a tube sheet and its purpose? Answer: in a vertical firetube
boiler holds the tubes and is thicker because it is exposed to the fire.
-----
holds the tubes and does not see the fire
◉ what is a waterleg on a boiler? Answer: space between the outer
shell and the furnace containing boiler water. it absorbs heat that
would be wasted and increases the capacity of the boiler. the
surfaces are flat and must be stayed.
, ◉ is an HRT Boiler set level or inclined and why?
-----
are HRT Boiler tubes set level or inclined and why? Answer:
INCLINED 1-3" front to rear to permit drainage and removal of
water impurities
-----
INCLINED with the boiler
◉ Name 2 way to support and take care of expansion of an HRT
Boiler
-----
Which way is best? Answer: 1) Suspended from hangars and
supported by overhead beams
2) Set on saddles equipped with rollers to permit movement of the
boiler as it expands and contracts
-----
Suspended from hangars and supported by overhead beams is best
because it works no hardship on the furnace walls
◉ what is a longitudinal joint?
-----
