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. A pycnometer is used for the measurement of

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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. Eutectoid composition of carbon steel at room temperature is

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

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

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

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

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

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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. Addition of __________ to steel does not impart hardness.

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Q. What is the value of entropy at 273°K ?

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Q. __________ fluid force is not considered in the Navier-Stokes equation.

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Q. Aluminium is extracted from

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Q. Which of the following does not have a sharp melting point ?

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Q. Mild steel has __________ crystal lattice structure.

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Q. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.

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Q. Stainless steel is welded using

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Q. A jet engine turbine blade is normally manufactured by

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