Chemical Engineering Basics Mcqs

Q.  High speed steel tools retain their hardness upto a temperature of __________________ °C?

a. 500
b. 750
c. 900
d. 1100


ANSWER: See Answer
 
No explanation is available for this question!
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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MCQs:  Speisses is a mixture of the following ?
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MCQs:  The difference between gross & net calorific values of fuel is due to the___________________?
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MCQs:  The starting of a car takes time in winter, because the__________________?
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MCQs:  Pressure required to increase the density of water by about 1% is ____________________ atmosphere?
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MCQs:  If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity_________________?
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MCQs:  A dense structure of grinding wheel is not used for the_____________________?
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