Related Questions

__________ 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
How many blocks away will Fred be from his starting p;ace if he travels two blocks north , then three blocks east, and then two blocks south?
A Four
B Two
C Three
D Zero
How many blocks away will Fred be from his starting place if he travels two blocks north, then three blocks east and then two blocks south?
A Four
B Two
C Three
D Zero
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
A Increases the reducing potential of the gas
B Increases the flame temperature
C No significant change occurs
D Increases the hydrogen content in the metal
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
A bus picks up a group of tourists at a hotel. The sightseeing bus travels 2 blocks north, 2 blocks east. I block south, 2 blocks east, and 1 block south. Where is the bus in relation to the hotel?
A 2 blocks north
B 1 block west
C 3 blocks south
D 4 blocks east
Operation of blast furnace stove is based on the principles of a __________ furnace.
A Regenerative
B Recuperative
C Both A and B
D Neither A nor B
Which is not a hearth furnace?
A Glass tank furnace
B Open hearth furnace
C Cupola
D Reheating furnace
Basic open hearth furnace (BOF) is not used for producing __________ steel.
A Killed
B Rimming
C High alloy
D None of these
If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.
A Sidefired
B Underfired
C Covered
D Recirculating

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