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Mechanical Operations

Q1: Use of baffles in agitators help in minimising the __________ tendency.

A swirling

B vortexing

C both (a) & (b)

D neither (a) nor (b)

ANS:C - both (a) & (b)

The use of baffles in agitators helps in minimizing both (a) & (b):

  • Swirling: Baffles in agitators help to reduce swirling, which is the rotational movement of fluid around the center axis of the agitator. Swirling can cause uneven mixing and inefficient agitation.
  • Vortexing: Baffles also help to minimize vortexing, which is the formation of a whirlpool-like motion in the fluid. Vortexing can create localized areas of high and low pressure, leading to inefficient mixing and potential aeration issues.
Therefore, the correct answer is both (a) & (b): Baffles in agitators serve to minimize both swirling and vortexing tendencies, thereby improving the efficiency and effectiveness of the mixing process.



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