Iso-oct ,ne________________?

Related Mcqs:

1. Pick up the wrong statement about supercharging __________________?

   A. supercharging reduces knocking in diesel engines
   B. there can be limited supercharging in petrol engines because of detonation
   C. supercharging at high altitudes is essential
   D. supercharging results in fuel economy
   E. supercharging is essential in aircraft engines

2. Cetane___________________?

   A. has zero cetane number
   B. has 100 cetane number
   C. helps detonation
   D. is a straight chain paraffin
   E. determines the efficiency of an I.C. engine

3. Petrol is distilled at a temperature in range of__________________?

   A. 30 – 65°C
   B. 65 – 220°C
   C. 220-350°C
   D. 350-450°C
   E. 450-550°C

4. The firing order in a six stroke I.C. engine is_________________?

   A. 1-3-6-5-2-4
   B. 1-4-2-5-6-3
   C. 1-6-2-5-4-3
   D. 1-5-2-6-3-4
   E. 1-5-3-4-2-6

5. Ignition quality of diesel-fuel oil is expressed by an index called__________________?

   A. octane number
   B. cetane number
   C. calorific value
   D. carbon content
   E. ignition temperature

6. The system of lubrication used for motor cycles and scooters is by________________?

   A. forced lubrication system
   B. splash lubrication
   C. applying grease under pressure
   D. wet sump method
   E. mixing about 5% lub oil with petrol

7. Solid injection in I.C. engines refers to injection of________________?

   A. liquid fuel only
   B. liquid fuel and air
   C. solid fuel
   D. solid fuel and air
   E. does not exist

8. The essential equipment for producing high vlotage for sparking in petrol engines with battery is_______________?

   A. ignition coil
   B. ignition coil and distributor
   C. ignition coil and condenser
   D. ignition coil and contact breaker
   E. ignition coil, contact breaker and con-denser

9. Pick up false statement?

   A. For petrol and large gas engines, quantity governingds preferred
   B. In quantity governing, air fuel ratio is almost constant and quantity of charge is changed depending on load
   C. In hit and miss governing, fuel supply is completely cut off during one or more number of cycles
   D. In quality governing, quantity of fuel is varied to suit the load and total charge of air is varied
   E. For close regulation of speed, combination of both quality and quantity governing is used

10. All the four operations in two stroke engine are performed in following number of revolutions of crank shaft______________________?

    A. Half
    B. One
    C. Two
    D. Four