Q. Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?

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Q. Nusselt number/Biot number varies

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Q. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

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Q. Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

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Q. Rockwell number represents the

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Q. Which of the following fastening devices has its both ends threaded ?

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Q. Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is

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Q. Copper is not present as an alloying constituent in

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Q. Lead is added to 60:40 brass primarily to improve

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Q. Air intake for an air compressor should be preferably taken from

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Q. Current asset of a factory includes the

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Q. If a solid is compressed adiabatically in its elastic range, its __________ remains constat

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Q. 'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

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Q. On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is

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Q. It is possible to form martensite

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Q. Which of the following material handling equipments is not suitable for moving materials in varying paths ?

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Q. Multistage compression is necessary for high efficiency,

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Q. __________ can not increase the fatigue strength of a material.

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Q. If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

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Q. Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

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