Chemical Engineering Basics Mcqs

Q.  Machinability of hard alloys and tool steels is improved by_____________________?

a. Spheroidising
b. Annealing
c. Tempering
d. Normalising


ANSWER: See Answer
 
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MCQs:  Ammonia leakage in the refrigeration system is detected by_________________?
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MCQs:  Blast furnace slag is mainly molten_________________?
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MCQs:  The best lubricants for a machine working at high temperature & load is_________________?
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MCQs:  A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?
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MCQs:  Titanium is added to molten aluminium alloys before casting for the purpose of_____________________?
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MCQs:  Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as_________________?
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MCQs:  Angular displacement can be measured suitably by a______________________?
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MCQs:  Maximum hardenability of steel depends upon its_______________________?
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MCQs:  Electrical conductivities of semi-conductors are of the order of ______________ ohm/cm ?
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MCQs:  The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of ______________ mm ?
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MCQs:  Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?
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MCQs:  Evaporative cooling process employs a combination of cooling and humidification in which the____________________?
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MCQs:  Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?
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MCQs:  Nitriding of a steel part does not increase its__________________?
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MCQs:  Chromium molybdenum steel cannot be welded using ______________ welding ?
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MCQs:  Which of the following fastening devices has a head at one end and a nut fitted to the other ?
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MCQs:  The elastic strain in copper is due to the__________________?
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MCQs:  Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the ______________ temperature of air?
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MCQs:  Factor of safety in machine design is defined as the ratio of ultimate stress to _____________ stress ?
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