Related Questions

Use of excess of combustion air in the combustion of fuels results in
A Heat losses
B Long flame
C Condensation of water vapour from the fuel gas
D None of these
__________ fuels require the maximum percentage of 'excess air' for complete combustion.
A Solid
B Liquid
C Gaseous
D Nuclear
During combustion of gaseous fuels, deficiency of air
A does not affect the flame length
B increases the flame temperature
C tends to shorten the flame
D lengthens the flame
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
A Poor visibility due to sky darkening
B Irritation in eyes
C Respiratory trouble
D All of the above
High excess air in combustion of fuels results in
A Increased fuel consumption
B Incomplete combustion
C Smoky flame
D None of these
The most commonly used combustion system manufactured in India for the thermal power plant boilers is the __________ combustion system.
A Pulverised fuel
B Travelling grate stoker firing
C Circulating fluidised bed
D Fluidised bed
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
Deficiency of combustion air during combustion of a gaseous fuel
A Lengthens the flame
B Causes heat loss of fuel by its partial combustion
C Both A & B
D Shortens the flame
Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.
A Thermal conductivity
B Electrical conductivity
C Specific gravity
D Electrical resistivity

Next steps