0
50
100
120
C. 100
Diesel
Kerosene
Fuel oil
Gasoline
30 kW four-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke diesel engine running at 750 r.p.m.
30 kW four-stroke diesel engine running at 750 r.p.m.
Homogeneous
Heterogeneous
Both (A) and (B)
None of these
Petrol, air and lubricating oil
Air and diesel
Petrol and lubricating oil
Petrol and air
Higher
Lower
Remain unaffected
None of the above
Leaking piston rings
Use of thick head gasket
Clogged air inlet slots
All of the above
[2(V₀/V₁)]/ [1 + (V₀/V₁)²]
(V₀/V₁)/ [1 + (V₀/V₁)²]
V₀/(V₀ + V₁)
V₁/(V₀ + V₁)
Exhaust will be smoky
Piston rings would stick into piston grooves
Engine starts overheating
Scavenging occurs
0.3 kg/hr
1 kg/hr
3 kg/hr
5 kg/hr
Unaffected
Lower
Higher
Dependent on other factors
Fuel pump
Fuel injector
Spark plug
None of these
Air used for combustion sent under pressure
Forced air for cooling cylinder
Burnt air containing products of combustion
Air used for forcing burnt gases out of engine's cylinder during the exhaust period
Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
Providing forced cooling air
Injecting excess fuel for raising more loads
Supplying compressed air to remove combustion products fully
25 %
50 %
70 %
100 %
Below 50%
Between 50 and 85%
Between 85 and 95%
Between 95 and 100%
1000 km/h
2000 km/h
2400 km/h
3000 km/h
It is a standard fuel used for knock rating of diesel engines
Its chemical name is normal hexadecane
It has long carbon chain structure
All of the above
0
50
100
120
Have no effect on
Increase
Decrease
None of these
Supercharging reduces knocking in diesel engines
There can be limited supercharging in petrol engines because of detonation
Supercharging at high altitudes is essential
Supercharging results in fuel economy
Highly ignitable
More difficult to ignite
Less difficult to ignite
None of these
Above the piston
Below the piston
Between the pistons
There is no such criterion
Supercharger
Centrifugal pump
Natural aspirator
Movement of engine piston
Mechanical efficiency
Overall efficiency
Volumetric efficiency
Relative efficiency
Hit and miss governing
Qualitative governing
Quantitative governing
Combination of (B) and (C)
Increase linearly
Decrease linearly
Increase parabolically
Decrease parabolically
Starts at 40° after bottom dead centre and ends at 10° before top dead centre
Starts at 40° before top dead centre and ends at 40° after top dead centre
Starts at top dead centre and ends at 40° before bottom dead centre
May start and end anywhere
Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
Temperature at which it solidifies or congeals
It catches fire without external aid
Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off
Spark ignition
Compression ignition
Both (A) and (B)
None of these
2 %
4 %
8 %
14 %