The accunmulation of carbon in a cylinder results in increase of________________?

Related Mcqs:

1. 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

2. 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

3. Auto-ignition reaction time for petrol engine first decreases with increase in fuel air ratio, reaches a minimum value and then increases with subsequent increase in fuel air ratio. The minimum value occurs in the region of________________?

   A. Lean mixture
   B. Chemically correct fuel air ratio
   C. Rich mixture
   D. Unpredictable

4. The m.e.p. of a petrol engine first increases as the fuel air ratio is increased and then decreases on further increase in fuel air ratio. The M.E.P is maximum in the zone of________________?

   A. lean mixture
   B. chemically correct mixture
   C. rich mixture
   D. unpredictable
   E. none of the above

5. 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

6. 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

7. 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

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

   A. heavy turbulence
   B. improved scavenging
   C. heavy supercharging
   D. detonation
   E. preignition

9. 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

10. 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-