Violent sound pulsations within the cylinder of an I.C. engine are caused due to_________________?

Related Mcqs:

1. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the________________?

   A. exhaust will be smoky
   B. piston rings would stick into piston grooves
   C. exhaust temperature will be high
   D. engine starts overheating
   E. scavenging occurs

2. The ignition of charge by some hot surface in the engine cylinder before operation of spark plug is known as________________?

   A. auto ignition
   B. preignition
   C. retarded ignition
   D. accelerated ignition
   E. detonation

3. The most popular firing order in case of four cylinder in-line I.C. engine is__________________?

   A. 1-2-3-4
   B. 1-3-2-4
   C. 1-4-2-3
   D. 1-2-4-3
   E. 1-3-4-

4. As the number of cylinders in multi-cylinder engine increases, the power to weight ratio_______________?

   A. Decreases
   B. Increases
   C. Remains same
   D. Decreases upto a limit and then increases

5. Deposition of carbon in petrol engine cylinder would result in increase of__________________?

   A. clearance volume
   B. swept volume
   C. compression ratio
   D. volumetric efficiency
   E. mean effective pressure

6. The maximum temperature in the I.C. engine cylinder is of the order of ________________?

   A. 500- 1000°C
   B. 1000- 1500°C
   C. 1500-2000°C
   D. 2000-2500°C
   E. 2500-3000°C

7. Which of the following medium is compressed in a Diesel engine cylinder __________________?

   A. air aione
   B. air and fuel
   C. air and lub oil
   D. fuel alone
   E. air, fuel and lub oil

8. In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of____________________?

   A. 250°C
   B. 500°C
   C. 1000°C
   D. 150CPC
   E. 2000°C

9. The operation of forcing additional air under pressure in the engine cylinder is known as________________?

   A. scavenging
   B. turbulence
   C. supercharging
   D. pre-ignition
   E. dissociation and carburretion of fuel

10. High carbon content in diesel oil used for diesel engine leads to_________________?

    A. production of highly corrosive gases corroding the cylinder walls and exhaust system
    B. excessive engine wear
    C. damaging of both the storage tank and the engine
    D. deposition on engine parts
    E. none of the above.