Q. Electric arc furnace is employed mainly for the production of __________ steel.

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Q. Heat treatment of steel is done mainly to change its

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Q. With increase in carbon percentage in steel, its

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Q. Percentage of gaunge is maximum in the ore of

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Q. The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?

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Q. Pick out the wrong statement.

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Q. The most commonly used material for sewers for carrying sewage in the normal situation is

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Q. Machine tool bodies are usually made of

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Q. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

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Q. On increasing the yield strength of a steel from 450 to 650 MPa, its __________ will increase.

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Q. The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

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Q. The path and movements followed by men, materials & equipments in executing the activities is indicated by the

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Q. Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.

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Q. Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?

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Q. 'End cooler' or 'after cooler' is employed in air compressor mainly to

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Q. Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.

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Q. The suction and delivery pressure for a two stage compressor are 1 and 25 atm respectively. The intermediate stage pressure would be around __________ atm.

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Q. __________ method of depreciation calculation ensures that the interest is charged on the cost of machine asset every year on the book value, but the rate of depreciation remains constant every year.

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Q. Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is

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Q. Color of brass changes from yellow to __________ after its dezincification which exemplifies selective leaching.

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