Q. The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.

View solution

Q. In packed towers provided with saddle packing, liquid redistributors are positioned at every __________ times column diameter or 6 metres whichever is less.

View solution

Q. Optimum reflux ratio in a continuous distillation column is determined by the

View solution

Q. Floating head heat exchangers are used for the

View solution

Q. The most common standard size of bubble caps used in industrial operation is

View solution

Q. Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

View solution

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

View solution

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

View solution

Q. Generally, elliptical dished heads

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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.

View solution

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

View solution

Q. Pick out the wrong statement:

View solution

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

View solution

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

View solution