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Consider the following statement for a ball falling in a viscous fluid: a) The viscous force is directly proportional to the radius of the ball b) The viscous force is directly proportional to the velocity of the ball c) The viscous force is inversely proportional to the radius of the ball d) The viscous force is inversely proportional to the velocity of the ball Which of the above statements are correct?
Read the given statements and conclusions carefully and select which of the conclusions follow(s) from the statements. Statements: I. All liquids are fluid. II. All fluids are viscous. Conclusions: I. All viscous are liquids. II. All liquids are viscous.
Statement 1: For non-Newtonian fluids, another term called apparent viscosity is used as their viscosity changes with the change in the shear rate. Statement 2: For non-Newtonian fluids, between the transition region, the power number for non-Newtonian fluids is slightly higher than that for Newtonian fluids.
Statement 1: Scraping improves heat transfer co-efficient by 5 times in case of non-Newtonian fluids. Statement 2: In food industry, major physical changes to food items when they’re processed, take place like transformation from Newtonian to Non-Newtonian fluids. Hence, scraped surface heat exchangers are very beneficial.
Which of the following is true about scraped surface crystallizers?
What is not true about scraped surface crystallizers?
Why don’t we use Natural convection for evaporating waste streams, crystallizers, and viscous fluids?
Statement 1: Scraped surface evaporators are used in the dairy industry. Statement 2: Plate evaporators can be used for viscous liquids.
Statement 1: Batch crystallizers are used if the throughput is high. Statement 2: The operating cost of batch crystallizers is high.
Scraped Surface Heat Exchangers are used for fluids which are generally heat ________