In compression ignition engines, swirl denotes a

A. Haphazard motion of the gases in the chamber

B. Rotary motion of the gases in the chamber

C. Radial motion of the gases in the chamber

D. None of the above

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  1. The increase in intake temperature of internal combustion engines will _________ efficiency.
  2. In a four stroke cycle petrol engine, the expansion
  3. A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of
  4. The combustion in compression ignition engines is
  5. A diesel engine as compared to petrol engine (both running and rated load) is
  6. Pick up the wrong statement
  7. A heat engine utilises the
  8. Which of the following statements is correct?
  9. The brake power is the power available
  10. If the temperature of intake air in internal combustion engine increases, then its efficiency will
  11. Pour point of fuel oil is the
  12. The basic requirement of a good combustion chamber is
  13. Which of the following medium is compressed in a Diesel engine cylinder?
  14. A stoichiometric air-fuel ratio is
  15. The power actually developed by the engine cylinder of an I.C. engine is known as
  16. A spark plug gap is kept from
  17. Polymerisation is a chemical process in which molecules of a compound become
  18. Flash point of fuel oil is
  19. When crude oil is heated, then which of the following hydrocarbon is given off first?
  20. The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft
  21. The pressure at the end of compression in the case of diesel engine is of the order of
  22. The specific fuel consumption per BH hour for a petrol engine is approximately
  23. For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of
  24. A mixture containing 65% of iso-octane and 35% of normal heptane will have
  25. A 75 cc engine has following parameter as 75 cc
  26. Compression ratio of I.C. Engines is
  27. As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
  28. Supercharging is essential in
  29. The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be
  30. The correct mixture strength (by weight) for petrol is about