Q. Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates

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Q. Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with

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Q. Draft allowance given to patterns is for

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Q. Which of the following welding processes employs the highest welding temperature ?

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Q. The best criterion for analysing an economic investment is the

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Q. Deformation band is absent in materials having __________ lattice crystal structure.

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Q. Out of the following, the rays having the lowest wavelength is the

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Q. A fine grained grinding wheel should not be used for grinding __________ materials.

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Q. What is the effect on the performance of the economiser in the thermal power plant boiler, if the feed water temperature is very low due to preheaters being out for repairs or starving of steam supply ?

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Q. A good abrasive

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Q. Out of the following, __________ pipe is the least corrosion resistant.

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Q. In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.

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Q. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg) ?

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Q. Sheardising process is used for

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Q. Mechanism/phenomenon involved in the improvement of fatigue strength of a material by shot peening is the

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Q. Springs are not made of

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Q. Pick out the wrong statement.

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Q. Monazite deposits constitute an important source for the following metal.

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Q. α-rays are

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Q. The bulk modulus of a material with Poisson's ratio of 0.5 is equal to

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