Chemical Engineering :: Chemical Engineering Basics
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Tempering of a material does not improve its
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High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.
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Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
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__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.
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Heat release during phase change is observed in case of a/an
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The hardenability of steel decreases with
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Pick out the correct statement about the condensation.
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Change in volume of metals from absolute zero temperature to their melting points is
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Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
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Alloy powder manufactured by the following process have spherical shapes.
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A.
Filmwise condensation gives a lower heat transfer rate than the dropwise condensation.
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B.
Suitable coating or vapour additive is used to promote film wise condensation.
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C.
If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it.
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D.
Reynolds number of condensing liquid is based on its mass flow rate.
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