The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is__________________?

Related Mcqs:

1. The efficiency of the ideal diesel cycle is ________ than that of Otto cycle, for the same compression ratio

   A. Higher
   B. Lower
   C. Equal
   D. None of these

   Submitted by: Faheem Zaman Dhaunroo

2. If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be________________?

   A. 2%
   B. 4%
   C. 8%
   D. 14%
   E. 27%.

3. The thermal efficiency of a semi-diesel cycle having fixed compression ratio and fixed quantity of heat, with increase in pressure ratio will_______________?

   A. increase
   B. decrease
   C. remain unaffected
   D. increase/decrease depending upon engine capacity
   E. first increase and then decrease

4. The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called__________________?

   A. net efficiency
   B. efficiency ratio
   C. relative efficiency
   D. overall efficiency
   E. cycle efficiency

5. Hot air standard diesel cycle efficiency with increase in value of C„_______________?

   A. increases
   B. decreases
   C. remains unaffected
   D. depends on other factors
   E. unpredictable

6. The thermal efficiecny of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will___________________?

   A. increase
   B. decrease
   C. be independent
   D. may increase or decrease depending on other factors
   E. none of the above

7. The m.e.p. of a diesel cycle having fixed compression ratio with increase in cut-off will_________________?

   A. increase
   B. decreae
   C. be unaffected
   D. depend on other factors
   E. unpredictable

8. In diesel engine, the compression ratio in comparison to expansion ratio is_______________?

   A. same
   B. less
   C. more
   D. variable
   E. more/less depending on engine capacity.

9. 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

10. 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