Q. For hardening high alloy steel, it is to be heated slowly and uniformly to avoid

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Q. Disposable patterns are made of

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Q. Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.

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Q. Which of the following is the most effective inhibitor of grain growth, when added in small quantity in steel ?

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Q. A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

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Q. An ideal fluid is

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Q. Which of the following is not found in iron-carbon equilibrium diagram ?

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Q. Which of the following metals can not be extracted by pyrometallurgical process from its sulphide ore?

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Q. Nitrogen compounds are not used in the manufacture of

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Q. Stellite is a trade name for the

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Q. Needles are produced by

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Q. High __________ of cast iron makes it suitable for use in machine beds.

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Q. Which of the following alloying elements reduces the formation of iron sulphide in steel ?

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Q. In age-hardenable alloys, maximum ductility is obtained

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Q. Prandtl mixing length in turbulent flow signifies the

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Q. Magnesium addition to cast iron increases its

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Q. Aromatics are desired constituents of

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Q. Galvanic corrosion

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Q. Increasing the temperature of a material makes it

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Q. Which of the following absorbs maximum heat in a high pressure boiler ?

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