IC Engine Practice Test 8

1. In thermo-syphon cooling system, the cooling only depends on temperature and is independent of the engine speed.

2. The amount of flow in EGR, can be as high as ____________ of the total intake.

3. The volumetric efficiency of an air-cooled engine is higher due to high cylinder head temperatures.

4. EGR and lower combustion temperatures contribute to an ____________ in solid soot.

5. The brake output per unit of piston displacement is defined as brake power.

6. The hypothetical pressure which is thought to be acting on the piston throughout the power stroke is called ____________

7. The main disadvantage of forced cooling is that cooling is ensured under all conditions of operation.

8. The catalyst materials most commonly used are platinum, palladium and rhodium.

9. A small amount of CO will come out of the exhaust even when the mixture is slightly lean in fuel.

10. Platinum and palladium catalyst promotes the removal of ____________ of the gaseous HC in the exhaust.