Which furnace employs preheating, heating and soaking zones ?
A. Soaking pit
B. Reheating furnace
C. Open hearth furnace
D. Cupola
Furnace Technology
Regenerators are normally provided in the____________________?
Regenerators are normally provided in the____________________?
A. Glass melting furnace
B. Open hearth furnace
C. By product coke ovens
D. All A., B. and C.
Overfire burning in a furnace is a phenomenon characterised by____________________?
Overfire burning in a furnace is a phenomenon characterised by____________________?
A. Supply of excess fuel
B. Supply of excess air
C. Burning carbon monoxide and other incombustible in upper zone of furnace by supplying
more air
D. None of these
Which is a continuous furnace ?
Which is a continuous furnace ?
A. Coke ovens
B. Annealing furnace
C. Glass tank furnace
D. None of these
Turndown ratio of a burner gives an idea of the ______________ in the furnace?
Turndown ratio of a burner gives an idea of the ______________ in the furnace?
A. Range of fuel firing rates
B. Volume of the combustion chamber
C. Maximum heat input rate only
D. Minimum heat input rate only
A refractory wall separating the stock and the source of heat is provided in a__________________?
A refractory wall separating the stock and the source of heat is provided in a__________________?
A. Updraft kiln
B. Muffle furnace
C. Continuous furnace
D. None of these
Large tonnage of refractory bricks are dried in a_____________________?
Large tonnage of refractory bricks are dried in a_____________________?
A. Shaft furnace
B. Rotary hearth furnace
C. Tunnel kiln
D. Muffle furnace
If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an ______________ furnace?
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
Which one shows the diagrammatic heat balance in a furnace ?
Which one shows the diagrammatic heat balance in a furnace ?
A. Sankey diagram
B. Cox chart
C. Ostwald chart
D. None of these
In reverberatory furnace, charge is heated mainly by__________________?
In reverberatory furnace, charge is heated mainly by__________________?
A. Conduction
B. Natural convection
C. Radiation of heat from the roof of the combustion chamber
D. None of these