Q321
Open questionThe preferred alloying element for low temperature applications of steel is
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Q322
Open questionMaximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
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Q323
Open questionPercentage of gaunge is maximum in the ore of
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Q324
Open questionHeat transfer by radiation from a hot body will be most rapid, if its surface is __________ because of its higher emissivity.
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Q325
Open questionA material is capable of resisting softening at high temperature, because of its property termed as
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Q326
Open questionAustenite is not
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Q327
Open questionIn the acid Bessemer process, the hot metal should have the following com-positon.
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Q328
Open questionDuring decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to
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Q329
Open questionBrazing is the joining of metals
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Q330
Open questionWhen water is sprayed on air, passing through an insulated chamber maintained at a temperature higher than the dew point of entering air but lower than its dry bulb temperature, then the air is
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Q331
Open questionWater-tube boiler is the one, in which
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Q332
Open questionThe expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.
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Q333
Open questionResilience of a bolt can be increased by increasing its
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Q334
Open questionThe temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.
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Q335
Open questionUnit molar solution of __________ is the best conductor of electricity.
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Q336
Open questionLead is poured into the joint between two- __________ pipes.
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Q337
Open questionThe hardenability of steel decreases with
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Q338
Open questionWhich of the following phenomenon will exhibit the minimum heat transfer?
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Q339
Open question__________ are normally subjected to sub-zero treatment.
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Q340
Open questionBlast furnace is a
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