Related Questions

Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by
A Preheating the combustion air
B Oxygen enrichment of combustion air
C Preheating the fuel gas
D All of the above
Coke oven gas is a better fuel than blast furnace gas, because of its higher
A Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)
B Adiabatic flame temperature
C Heat release rate (thus requiring smaller combustion chamber)
D All of the above
Fuel economy in an industrial furnace operation can not be achieved by the use of
A Stoichiometric combustion air
B Non-preheated combustion air
C Combustion air not enriched with oxygen
D Recupterators
Which of the following is a lean fuel gas?
A Coke oven gas
B LPG
C Blast furnace gas
D Natural gas
Rahim's convertible gets gas mileage that is 40% higher than that of Karim's SUV. If Jalil's hatchback gets gas mileage that is 15% higher than of Rahim's convertible, then that of Rahim's convertible, then Jalil's hatchback gets gas mileage that is what percent greater that of Karim's SUV?
A 46%
B 55%
C 61%
D 25%
The _________ engines can work on very lean mixture of fuel.
A Spark ignition
B Compression ignition
C Both (A) and (B)
D None of these
The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.
A Isotactic
B Saturation
C Inversion
D Throttling
Higher fuel combustion efficiency can not be achieved by
A Preheating of fuel gases & combustion air
B Reducing sulphur content in the fuel
C Adopting proper fuel firing technique & fuel preparation
D Supplying correct amount of combustion air
Higher efficiency in the combustion of solid fuel can not be achieved by
A Proper fuel preparation
B Keeping the flue gas exhaust temperature very high
C Adopting efficient-fuel firing technique & equipment
D Supplying correct quantity of combustion air
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.
A Walking beam
B Shaft
C Tunnel
D Rotary hearth

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