PrepBharat

1. The power output of hydrogen engine is limited by ___________
a) detonation and knocking
b) pre-ignition and back flash
c) pre-ignition and detonation
d) none of the mentioned

View Answer

2. Hydrogen gas has less than _______________ the density of air.
a) 1/12th
b) 1/10th
c) 2/3rd
d) 1/3rd

View Answer

3. The heating value per unit volume of hydrogen gas is less than ______________ that of air.
a) 1/12th
b) 1/10th
c) 2/3rd
d) 1/3rd

View Answer

4. Hydrogen can be used in S.I. engines by ___________
a) manifold induction
b) direct introduction of hydrogen into the cylinder
c) supplementing gasoline
d) all of the mentioned

View Answer

5. Hydrogen is _____________ reactive fuel.
a) highly
b) non
c) less
d) none of the mentioned

View Answer

6. Natural gas obtained from oil wells is known as ___________
a) dry gas
b) wet gas
c) casing head gas
d) none of the mentioned

View Answer

7. A carburetor is used to supply _____________
a) petrol, air and lubricating oil
b) air and diesel
c) petrol and lubricating oil
d) petrol and air

View Answer

8. The compensating jet in a carburetor supplies an almost constant amount of petrol at all speeds because the ____________
a) jet area is automatically varied depending on the suction
b) the flow from the main jet is diverted to the compensating jet with an increase in speed
c) the diameter of the jet is constant and the discharge coefficient is invariant
d) flow is produced due to the static head in the float chamber

View Answer

9. Which of the following does not relate to spark ignition engine?
a) Ignition coil
b) Spark plug
c) Carburetor
d) Fuel injector

View Answer

10. Which of the following does not relate to a compression ignition engine?
a) Fuel pump
b) Fuel injector
c) Governor
d) Carburetor

View Answer