Related Questions

Outer combustion chamber of blast furnace stove is lined with __________ bricks.
A Fireclay
B Silica
C Chrome magnesite
D Zirconia
The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of
A 75%
B 85%
C 90%
D 99%
In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as
A Scavenging
B Detonation
C Supercharging
D Polymerisation
The amount of combustible escaping uncon-sumed from the furnace, depends upon the
A Air supplied and furnace temperature
B Burner design (thoroughness of mixing versus stratification)
C Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction)
D All of the above
The heating capacity of continuous reheating furnace depends upon the
A Hearth area and furnace temperature
B Emissivity of the stock
C Ratio of wall surface to stock surface
D All of the above
Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the
A Quantity & temperature of waste gas
B Dust concentration & nature of dust in waste gas
C Corrosive nature of the waste gas
D All of the above
The rate of scaling of furnace stock depends upon the
A Temperature
B Time
C Nature of atmosphere
D All of the above
The optimum percentage of excess air for combustion depends upon the __________ of the fuel.
A Type (solid, liquid or gaseous)
B Calorific value
C Sulphur content
D Ignition temperature
A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
A Dry dock
B Wet dock
C Floating dock
D Refuge dock
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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