Dies for wire drawing are generally made of
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When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively
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Surface tension is due to the __________ forces.
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Pick out the wrong statement.
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Which of the following is an example of stress corrosion ?
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Which of the following is not a characteristic observed in material failure by fatigue fracture ?
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While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
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The total frictional resistance to fluid flow does not depend upon the
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Which of the following is a unit of time ?
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In extrusion of metals, which of the following statement is true ?
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__________ is the most suitable lubricant for drawing mild steel wires?
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Maraging steels derive their strength from the following mechanism:
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Ignition of fuel in a diesel engine is by
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Blast furnace slag is mainly molten
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Paint spray gun works on the principle of
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For the irreversible reaction, Ca+ 2C = CaC2, ΔH°298 = -60000 J.mole-1. If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be
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__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
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Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are
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Which of the following welding processes employs the highest welding temperature ?
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Which of the following is a boiler accessory i.e., not a boiler mounting ?
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