The size of inlet valve of.an engine in comparison to exhaust valve is_________________?

Related Mcqs:

1. 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

2. 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

3. In the case of petrol engine at maximum output, the percentage of CO in exhaust gases is ____________________?

   A. Zero
   B. 5-10%
   C. Depends on load and quality of fuel
   D. Considerable percent

4. In the case of compression ignition engine, the %age of CO in exhaust gases is________________?

   A. Zero
   B. 5-10%
   C. Depends on load
   D. Considerable percent

5. The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?

   A. 180°
   B. 125°
   C. 235°
   D. 200°
   E. 275°

6. In a typical medium speed 4-stroke cycle diesel engine the inlet valve_____________________?

   A. opens at 20° before top dead center and closes at 35° after the bottom dead center
   B. opens at top dead center and closes at bottom dead center
   C. opens at 10° after top dead center and closes 20° before the bottom dead center
   D. may open or close anywhere
   E. remains open for 200°.

7. 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.

8. 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

9. For the same size and weight, a two stroke engine as compared to four stroke engine will generate power_________________?

   A. about twice
   B. about 0.5 times
   C. nearly equal
   D. about 1.7 times
   E. about 5 times

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

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