Related Questions

Roof of a basic open hearth furnace is lined with __________ bricks.
A Silica
B Fireclay
C Dolomite
D Magnesite
Basic open hearth furnace (BOF) is not used for producing __________ steel.
A Killed
B Rimming
C High alloy
D None of these
__________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold.
A High thermal conductivity
B Low porosity
C Non-wetting characteristics
D High density
Which is not a hearth furnace?
A Glass tank furnace
B Open hearth furnace
C Cupola
D Reheating furnace
Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its
A Non-wetting characteristic
B High thermal conductivity
C High crushing strength
D None of these
Bottom of basic open hearth furnace are constructed of
A Dead burnt magnesite ramming mass
B Porous fireclay bricks
C Semi-silica bricks
D Silicon carbide bricks
The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
A Arc
B Resistance
C Low frequency induction
D High frequency induction
Chimney Sweeps employs people to clean fireplaces and chimneys in homes and apartments.The firm is primarily the marketer of which one of the following?
A An image
B A service
C A good
D An idea
The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen.
A Lower than
B Higher than
C Same as
D Not related to
The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
A Lower than
B Higher than
C Same as
D Not related to

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