Q. In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

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Q. Normalising of a casting does not

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Q. The swift cup test evaluates the following property of a sheet metal.

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Q. __________ is the most important element, which controls the physical properties of steel.

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Q. The order of a chemical reaction

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Q. Pick out the wrong statement.

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Q. Pick out the wrong statement.

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Q. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be

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Q. Identify the false statement

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Q. The total frictional resistance to fluid flow does not depend upon the

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Q. Stretcher strains found in a low carbon sheet are associated with the

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Q. The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

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Q. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

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Q. Which of the following is resistant to the action of both heat & chemicals ?

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Q. Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

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Q. Which of the following is a unit of time ?

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Q. __________ furnace is generally used in the non-ferrous foundaries.

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Q. Steel & cast iron pipes are produced by __________ casting.

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Q. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

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Q. The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺| Cu can be increased by

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