1. Gaseous fuel is most suited for IC engine since the physical delay is almost ___________
a) zero
b) more
c) less
d) none of the mentioned
Explanation: As compared to other fuels there is almost no delay in gaseous fuel and for this purpose, it is preferred the most.
2. What is the advantage of hydrogen as an IC engine fuel?
a) high volumetric efficiency
b) low fuel cost
c) no HC and CO emissions
d) none of the mentioned
Explanation: The main advantage of hydrogen as an IC engine fuel is that there are no HC and CO emissions.
3. What is the disadvantage of hydrogen as a fuel in an IC engine?
a) storage is safe
b) low NOx
c) detonating tendency
d) easy handling
Explanation: detonating tendency
4. Which is the major constituent of natural gas?
a) ethane
b) methane
c) butane
d) propane
Explanation: Only methane is the major constituent of natural gas.
5. What is the octane of natural gas?
a) 60-80
b) 80-100
c) >100
d) <60
Explanation: The octane number of natural gas is always > 100.
6. What is the major disadvantage of LPG as fuel in automobiles?
a) reduction in life of engine
b) less power compared to gasoline
c) reduction in life of engine & less power compared to gasoline
d) none of the mentioned
Explanation: reduction in life of engine & less power compared to gasoline
7. Hydrogen gas has ______________ self-ignition temperature.
a) very low
b) very high
c) no
d) none of the mentioned
Explanation: very high
8. The energy content of air hydrogen mixture is _________ than liquid hydrocarbon fuels.
a) lower
b) higher
c) negligible
d) none of the mentioned
Explanation: lower
9. Hydrogen has very ______________ density both as gas and as liquid.
a) high
b) low
c) equal
d) none of the mentioned
Explanation: In both gas and in liquid form, hydrogen has very low density.
10. Hydrogen engine operate on ____________ throttling.
a) very little
b) very high
c) without
d) none of the mentioned
Explanation: Very high throttling is required in a hydrogen engine operation.