IC Engine Practice Test 6

1. What are the phases of CI engine combustion?

2. The amount of vortex activity,and the disintegration of others, _____________ the turbulent flow with rising engine speed.

3. The valve gear friction losses vary with the engine design variables and no general equation is available predicting them.

4. In hydrodynamic friction, the friction force does not depends on the lubricant viscosity.

5. Knock is a function of the fuel chosen and may be avoided by choosing a fuel with characteristics that do not give too long a delay period.

6. The time for which delay period occurs decreases with ___________ in engine speed.

7. Total friction is negligible compared to rolling friction.

8. Which of the following factors affecting combustion in the CI engine?

9. The mechanical friction ___________ with increase in speed.

10. In ____________ combustion, the flame initiated by the spark travels across the combustion chamber in a fairly uniform manner.