Q. Between 230 and 370°C, blue brittleness is caused in mild steel because of the

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Q. Boiling point of water gets lowered at high altitudes (e.g., hills), because

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Q. With increase in temperature, the electrical conductivity of semiconductors

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Q. Which of the, following is not associated with the functioning of a petrol engine ?

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Q. Minimum number of members required to form a Public Limited Joint Stock Com-pany is

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Q. In an eutectic system, two elements are completely

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Q. Boiler tube size is specified by its thickness and __________ diameter.

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Q. Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

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Q. Unit of surface tension in S.I. unit is

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Q. The joint for soldering is supported by binding wire made of

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Q. The main reducing agent in iron blast furnace is

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Q. Fibrous fracture is normally encountered in the __________ materials.

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Q. Bad odour in sanitary latrines is reduced by periodically sprinkling

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Q. __________ has the highest melting point out of the following.

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Q. The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

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Q. Annealing of cast iron

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Q. A dummy activity is used in PERT network to describe the

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Q. Which of the following is not a characteristic observed in material failure by fatigue fracture ?

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Q. A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent.

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Q. Current employed in resistance welding ranges from __________ kVA/cm² .

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