In practice, the compression ratio of compression-ignition (CI) engine ranges from
15 to 25
5 to 10
40 to 55
60 to 70
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- The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
- Reduction in the grain size reduces the __________ of the material.
- Stainless steel is welded with difficulty because of
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- At 100% relative humidity, the dew point temperature of moist air is
- Holes for riveting purposes should be preferably made by
- Which of the, following is not associated with the functioning of a petrol engine?
- Increasing the carbon content of steel
- Which of the following properties of a solid is not dependent on crystal imperfection?
- Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare…
- Ammonia gas can be dried by
- Fine grained steels have
- The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
- Corrosion is
- Removal of non-condensable from steam or other vapour is termed as the __________ process.
- Atomic __________ is a whole number for an element.
- Notched bar test is used for testing the __________ of a material.
- On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate…
- Large scale fire on fuel gas line is normally extinguished by
- Which of the following metals cannot be hot worked at room temperature?
- Filler material used in welding should have __________ as compared to the parent metal to be welded.
- In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
- An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform…
- Triple point of water is
- Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
- A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal…
- Which of the following is used to produce draught in the locomotive boilers?
- Which of the following is not a dielectric material?
- __________ of grey cast iron produces white cast iron.