Related Questions

Actual flame temperature is always lower than the adiabatic flame temperature, because there is
A No possibility of obtaining complete combustion at high temperature
B Always loss of heat from the flame
C Both A & B
D Neither A nor B
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
Adiabatic flame temperature of a fuel is dependent on the initial temperature of
A Fuel
B Air
C Both A & B
D Neither A nor B
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in
A Air
B Oxygen
C Either A or B
D Either A or C without gain or loss of heat
Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has
A Higher calorific value
B Lower hydrogen content
C Both A & B
D Neither A nor B
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
Short/intense flame is produced during combustion of gaseous fuel by using
A High amount/current of combustion air
B Low amount/current of combustion air
C Preheated secondary air
D Very little excess air
In a new production process, the number of units produced during the first week was 450. If the efficiency gradually increase so that 10 additional units can be produced each week, how many will be produced in the 10th week?
A 490
B 700
C 540
D 640
The temperature of the inner luminous cone of neutral flame is about
A 1000°C
B 1250°C
C 2100°C
D 3200°C

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