Q. Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

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Q. Removable connection of tubes to tube sheet is called

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Q. Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

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Q. In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

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Q. The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

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Q. Lₑ/D for couplings and unions would be

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Q. What is the slope of the operating line in the rectifying section of a distillation coloumn ?

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Q. Stage efficiency for packed tower varies with the

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Q. Maximum plate efficiency is achieved in case of __________ flow.

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Q. The LMTD correction factor (Fт) is defined as the

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Q. The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

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Q. The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

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Q. Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

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Q. __________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

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Q. At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

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Q. The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.

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Q. Baffle spacing is generally __________ the I.D. of the shell.

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Q. The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

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Q. The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

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Q. Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

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