Q. Addition of __________ to steel does not impart hardness.

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Q. For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

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Q. Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

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Q. Wavelength of radiation emitted by a body depends on the __________ of its surface.

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Q. Difference at any instant between the value of the controlled variable and the set point is called the

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Q. The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.

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Q. Nickel and __________ are the alloying element added in steel to increase its toughness.

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Q. Which of the following equipments is used for liquid dispersion ?

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Q. Eutectoid composition of carbon steel at room temperature is

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Q. Out of the following, which will fracture most readity, when hit with a hard hammer ?

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Q. A pycnometer is used for the measurement of

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Q. For infinite parallel planes having emis-sivities ε₁ & ε₂, the interchange factor for radiation from surface 1 to surface 2 is given by

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Q. Working of linear variable differential transducer (LVDT) is based on the principle of variable

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Q. A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

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Q. Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

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Q. Corrosion is

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Q. Which of the following is not an ore of copper?

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Q. Maximum permissible sulphur content in steel is __________ percent.

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Q. The dimensional formula of bulk modulus of elasticity is same as that of the

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Q. Ferromagnetic material owe their properties to __________ inner sub-shells.

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