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WorksheetsGeneral Fuel properties
Total questions: 10
Worksheet time: 7mins
Advantage of gaseous fuel is that
it can be stored easily
it can mix easily with air
it can displace more air from the engine
all of the above
Octane number of iso-octane is
0
30
60
100
Abnormal combustion in a SI engine causes
high ratio of energy decrease
excessive rise in pressure and temperature
reduction in thermal efficiency
all of the above
A good CI engine fuel should have
high octane number
very high cetane number
a short ignition lag
all of the above
Crude oil is separated into gasoline, kerosene and fuel oil by
cracking
heating
fractional distillation
reforming
The centane number of Automotive diesel fuel used in India is in which one of the following ranges
30-40
41-50
51-60
61-70
Two reference fuel for knocking rating of CI engine would include
Cetane and iso-octane
cetane and tetraethyl lead
cetane and α-methyl naphthalen
centane and normal heptane
Engine piston are usually made up of Aluminium Alloy because of it
is lighter
wear is less
Absorbs shocks
is Stronger
Iso octane has a octane number of
0
50
100
80
In order to eliminate knocking in compression ignition engines, there should be a
short delay period
late auto ignition
low compression ratio
high self ignition temperature of fuel
