In practice, the compression ratio of compression-ignition (CI) engine ranges from

A. 15 to 25

B. 5 to 10

C. 40 to 55

D. 60 to 70

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
  2. Reduction in the grain size reduces the __________ of the material.
  3. Stainless steel is welded with difficulty because of
  4. On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the…
  5. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 ×…
  6. At 100% relative humidity, the dew point temperature of moist air is
  7. Holes for riveting purposes should be preferably made by
  8. Which of the, following is not associated with the functioning of a petrol engine?
  9. Increasing the carbon content of steel
  10. Which of the following properties of a solid is not dependent on crystal imperfection?
  11. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare…
  12. Ammonia gas can be dried by
  13. Fine grained steels have
  14. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
  15. Corrosion is
  16. Removal of non-condensable from steam or other vapour is termed as the __________ process.
  17. Atomic __________ is a whole number for an element.
  18. Notched bar test is used for testing the __________ of a material.
  19. On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate…
  20. Large scale fire on fuel gas line is normally extinguished by
  21. Which of the following metals cannot be hot worked at room temperature?
  22. Filler material used in welding should have __________ as compared to the parent metal to be welded.
  23. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  24. An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform…
  25. Triple point of water is
  26. Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
  27. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal…
  28. Which of the following is used to produce draught in the locomotive boilers?
  29. Which of the following is not a dielectric material?
  30. __________ of grey cast iron produces white cast iron.