A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is
248 cm3
252 cm3
264 cm3
286 cm3
Correct Answer :
C. 264 cm3
Related Questions
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Spark ignition
Compression ignition
Both (A) and (B)
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Less
Same
More/less depending on capacity of engine
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50
100
120
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In a four stroke cycle petrol engine, the expansion
Starts at top dead centre and ends at bottom dead centre
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Lean
Rich
Chemically correct
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Increase maximum pressure and decrease maximum temperature
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60 - 80 rpm
Pick up the false statement
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Theoretically correct mixture of air and petrol is approximately 15:1
High speed compression engines operate on dual combustion cycle
S.I. engines are quality governed engines
A petrol engine, during suction stroke draws
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Petrol only
A mixture of petrol and air
None of these
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25 to 30
30 to 40
40 to 55
All heat engines utilize
Low heat value of oil
High heat value of oil
Net calorific value of oil
Calorific value of fuel
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Octane number 65
Cetane number 35
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Injector
Governor
None of these
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0.2 kg
0.25 kg
0.3 kg
0.35 kg
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Kerosene
Gasoline
Paraffin
Natural gas
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Requires smaller foundations
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Petrol and lubricating oil
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Overall efficiency
Volumetric efficiency
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Starts at bottom dead centre and ends at top dead centre
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Inject fuel at a high velocity to facilitate atomisation
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Low volatility
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Supercharged
Centrifugal pump
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Heat resulting from compressing air that is supplied for combustion
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1 m3
5 m3
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Volume displaced by piston per stroke and clearance volume in cylinder
Ratio of pressure after compression and before compression
Swept volume/cylinder volume