Injection lag is_________________?

Related Mcqs:

1. Air injection in I.C. engines refers to injection of___________________?

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

2. 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

3. In a diesel engine, injection pressure developed by injector is of the order of______________?

   A. 10 kg/cm2
   B. 100 kg/cm2
   C. 500 kg/cm2
   D. 1400 kg/cm2

4. Ignition lag is__________________?

   A. the time taken by fuel after injection (before top dead center) to reach upto auto-ignition temperature
   B. time before actual fuel injection and the pump plunger starts to pump fuel
   C. time corresponding to actual injection and top dead center
   D. time corresopnding to actual ingition and top dead center
   E. none of the above

5. The self-ignition temperature of diesel oil compared to petrol is_________________?

   A. higher
   B. lower
   C. same
   D. depends on quality of fuel
   E. unpredictable

6. 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

7. The specific gravity of diesel oil Is_________________?

   A. 1
   B. 0.7
   C. 0.85
   D. 0.5
   E. 1.25

8. The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?

   A. more
   B. less
   C. same
   D. more upto some load and then less
   E. it may be less or more depending on several other factors

9. Air fuel ratio at which a petrol engine can not work is_________________?

   A. 8 : 1
   B. 10 : 1
   C. 15 : 1
   D. 20 : 1 and less
   E. will work at all ratios

10. The metallic structure of mild steel is_________________?

    A. body centred cubic
    B. face centred cubic
    C. hexagonal close packed
    D. cubic structure
    E. orthorhombic crystal