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

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. 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...

3. The fuel in diesel engine is normally injected at pressure of_________________?

   A. 5-10 kg/cm2 B. 20-25 kg/cm2 C. 60-80 kg/cm2 D. 90-130 kg/cm2 E. 150-250 kg/cm2...

4. The ratio of useful power; engine friction exhaust gas losses; cooling water, air and oil losses for a diesel engine is of the order of____________________?

   A. 5:25:30:50 B. 25:35:5:35 C. 25:5:10:60 D. 40:30:15:15 E. 25:5:35:35...

5. The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?

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

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. 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...

9. 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...

10. A hmh flame speed is obtained in diesel engine when air fuel ratio is_______________?

    A. uniform throughout the mixture B. chemically correct mixture C. about 3-5% rich mixture D. about 10% rich mixture E. about 10% lean mixture...