Q. The ratio of the shear stress to the principal stress on a principal plane is

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Q. Case hardening is not done by

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Q. Satellites burn off during re-entry to earth's atmosphere, because of the

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Q. With increase in compression ratio, the volumetric efficiency of air compressor

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Q. Neutrons are present in all atoms except that of

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Q. Biological shield in a nuclear reactor is generally provided to protect against the

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Q. Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

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Q. Propulsion of rocket follows from the

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Q. In multipass welds, shot peening is done after each pass to

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Q. Pick out the correct statement.

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Q. Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

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Q. Laser welding is widely employed in the __________ industries.

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Q. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.

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Q. Which of the following is used to produce draught in the locomotive boilers ?

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Q. Temper brittleness of a material can be fairly detected by the __________ test.

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Q. When the wavelength of incident X-rays increases, the angle of diffraction

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Q. __________ of air does not increase with increase in temperature.

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Q. Spherical shape of mercury droplets is due to its

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Q. Sub zero treatment of steel is done to

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Q. Air-petrol ratio for maximum power generation in spark ignition engine is about

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