Ignition timing of a multicylider petrol engine can be adjusted by_________________?

Related Mcqs:

1. With increase in engine speed, the ignition of spark in petrol engine has to be __________________?

   A. Unaltered B. Increased C. Decreased D. Advanced...

2. The thermal efficiency of a petrol engine of two stroke with crank case scavenging as compared to four stroke petrol engine with same comperssion ratio will be_____________________?

   A. higher B. lower C. same D. depends on size of engine E. unpredictable....

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. In petrol engines, advancing the spark timing will_______________?

   A. increase the knocking tendency B. decrease the knocking tendency C. not affect the knocking tendncy D. increase or decrease knocking tendency depending on strenght and time of spark E. unpredictable...

5. A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?

   A. more efficient B. less efficient C. equally efficient D. unperdictable E. other factors will decide it...

6. Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided__________________?

   A. it is properly designed B. best quality fuel is used C. can not work as it is impossible D. flywheel size is proper E. engine cooling is stopped...

7. The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is_______________?

   A. same B. more C. less D. less or more depending on operating conditions E. unpredictable...

8. Ignition quailty of petrol is expressed by___________________?

   A. octane number B. cetane number C. calorific value D. self ignition temperature E. distillation temperature...

9. 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...

10. Self-ignition temperature of petrol is of the order of___________________?

    A. 150°C B. 240°C C. 370°C D. 450°C E. more than 500°C....