Q. In case of a continuous distillation column, increase in reflux ratio may result in the

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Q. In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

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Q. Generally, elliptical dished heads

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Q. Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

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Q. The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

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Q. Lₑ/D for fully open gate valves would be

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Q. LMTD correction factor is used in heat exchanger design for

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Q. Pick out the wrong statement about the design of a sieve plate column.

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Q. Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

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Q. Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

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Q. In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

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Q. Pick out the wrong statement:

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Q. Speed of industrial paddle agitator ranges from __________ rpm.

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Q. __________ strain is measured using a 'strain rosetter'.

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Q. Thin spherical shells subjected to internal pressure, develop __________ stresses.

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Q. With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

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Q. The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is

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Q. Thickness of the frame of a plate and frame filter as compared to that of plates is

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Q. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?

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Q. The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

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