Haphazard motion of the gases in the chamber
Rotary motion of the gases in the chamber
Radial motion of the gases in the chamber
None of the above
B. Rotary motion of the gases in the chamber
To determine the information, which cannot be obtained by calculations
To conform the data used in design, the validity of which may be doubtful
To satisfy the customer regarding the performance of the engine
All of the above
Jet area is automatically varied depending on the suction
The flow from the main jet is diverted to the compensating jet with increase in speed
The diameter of the jet is constant and the discharge coefficient is invariant
Flow is produced due to the static head in the float chamber
Beginning of suction stroke
End of suction stroke
Beginning of exhaust stroke
End of exhaust stroke
0.3 kg/hr
1 kg/hr
3 kg/hr
5 kg/hr
Not effect
Decrease
Increase
None of these
Controlling valve opening/closing
Governing
Injection
Carburetion
20 to 40
40 to 60
60 to 80
80 to 100
Enhance flow rate
Control air flow
Induce primary swirl
Induce secondary turbulence
Minimum turbulence
Low compression ratio
High thermal efficiency and power output
Low volumetric efficiency
Increase
Decrease
Remain same
None of these
In the engine cylinder
At the crank shaft
At the crank pin
None of these
Supercharging
Carburetion
Turbulence
Delay period
Remain same
Decrease
Increase
None of these
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
1 : 1
5 : 1
10 : 1
15 : 1
V₁/(V₀ + V₁)
V₀/(V₀ + V₁)
2V₀/(V₀ + V₁)
2V₁/(V₀ + V₁)
The ratio of volumes of air in cylinder before compression stroke and after compression stroke
Volume displaced by piston per stroke and clearance volume in cylinder
Ratio of pressure after compression and before compression
Swept volume/cylinder volume
Opens at 50° before bottom dead centre and closes at 15° after top dead centre
Opens at bottom dead centre and closes at top dead centre
Opens at 50° after bottom dead centre and closes at 15° before top dead centre
May open and close anywhere
130°
180°
230°
270°
Highly ignitable
More difficult to ignite
Less difficult to ignite
None of these
Is lighter
Requires smaller foundations
Consumes less lubricating oil
All of these
Homogeneous
Heterogeneous
Both (A) and (B)
None of these
20 to 25
25 to 30
30 to 40
40 to 55
Hit and miss governing
Qualitative governing
Quantitative governing
Combination of (B) and (C)
Mechanical efficiency
Overall efficiency
Volumetric efficiency
Relative efficiency
Below 50%
Between 50 and 85%
Between 85 and 95%
Between 95 and 100%
0.001 second
0.002 second
0.003 second
0.004 second
Opens at 30° before bottom dead centre and closes at 10° after top dead centre
Opens at 30° after bottom dead centre and closes at 10° before top dead centre
Opens at bottom dead centre and closes at top dead centre
May open and close anywhere
6 to 10
10 to 15
15 to 25
25 to 40
Paraffin, aromatic, napthene
Paraffin, napthene, aromatic
Napthene, aromatics, paraffin
Napthene, paraffin, aromatic