Q. Tungsten in high speed steel is responsible for its

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Q. Heat transfer by radiation from a hot body will be most rapid, if its surface is __________ because of its higher emissivity.

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Q. Reduction reaction involves the

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Q. Specific heat of an ideal gas depends upon its

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Q. In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

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Q. A __________ type pressure sensing element is commonly used in aneroid barometer.

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Q. The ability of a substance to assume two or more crystalline structure is called

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Q. The main function of the deaerator used in the thermal power plant is to

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Q. Lubricants can be used to

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Q. Which of the following is termed as the boiler mounting ?

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Q. Paint spray gun works on the principle of

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Q. The phenomenon of strain-ageing is generally experienced with

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Q. The capacity of a material to absorb energy depends upon both its strength & stiffness. The term 'stiffness' of a material is the opposite of its

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Q. Filler metal is not used in the __________ welding.

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Q. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K⁻¹mole⁻¹)

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Q. Sudden immersion/dipping of red hot steel bar in water makes it

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Q. No cutting fluid is normally used, while machining

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Q. An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is

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Q. pH value of rain water in India ranges from

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Q. The capital & running costs of similar machines having unequal service life can be compared by the __________ method.

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