1 m3
5 m3
56 m3
910 m3
D. 910 m3
0
50
100
120
Mechanical efficiency
Overall efficiency
Volumetric efficiency
Relative efficiency
Otto cycle
Diesel cycle
Dual combustion cycle
All of these
Kerosene
Gasoline
Paraffin
Natural gas
8 : 1
10 : 1
15 : 1
20 : 1 and less
It is properly designed
Best quality fuel is used
Cannot work as it is impossible
Flywheel size is proper
Peak pressure
Rate of rise of pressure
Rate of rise of temperature
Peak temperature
1 valve
2 valves
3 valves
4 valves
Pre-ignition period
Delay period
Period of ignition
Burning period
Is lighter
Wear is less
Absorbs shocks
Is stronger
To reduce mass of the engine per brake power
To reduce space occupied by the engine
To increase the power output of an engine when greater power is required
All of the above
10 bar
100 bar
150 bar
500 bar
2 %
4 %
8 %
14 %
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
Temperature
Volume
Density
None of these
Less difficult to ignite
Just about the same difficult to ignite
More difficult to ignite
Highly ignitable
High self ignition temperature
Low volatility
Higher viscosity
All of these
10 bar
20 bar
25 bar
35 bar
15 %
30 %
50 %
70 %
Retarding the spark
Increasing the engine speed
Both (A) and (B)
None of these
Compression starts at 35° after bottom dead center and ends at top dead center
Compression starts at bottom dead center and ends at top dead center
Compression starts at 10° before bottom dead center and, ends just before top dead center
May start and end anywhere
Clearance volume
Volumetric efficiency
Ignition time
Effective compression ratio
2-stroke petrol engine
4-stroke petrol engine
Diesel engine
Steam turbine
A four stroke cycle engine develops twice the power as that of a two stroke cycle engine
For the same power developed, a four stroke cycle engine is lighter, less bulky and occupies less floor area
The petrol engines are costly than diesel engines
All of the above
Same
Lower
Higher
None of these
4-6 kg/cm² and 200-250°C
6-12 kg/cm² and 250-350°C
12-20 kg/cm² and 350-450°C
20-30 kg/cm² and 450-500°C
Low heat value of oil
High heat value of oil
Net calorific value of oil
Calorific value of fuel
Increase
Decrease
Remain same
None of these
0.001 second
0.002 second
0.003 second
0.004 second
Flat
Contoured
Slanted
Depressed