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Statement 1: In μ_a= τ/γ = Kγ(n-1) , n = consistency index and K is the flow behaviour index. Statement 2: n= 1 for Newtonian fluids, n<1 for dilatant fluids and n>1 for pseudo plastic fluids.

Correct Answer: False, False
Both the statements are false. K = consistency index and n is the flow behaviour index. n is greater than 1 for dilatant fluids and n is less than 1 for pseudo plastic fluids.

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: Considering the equation, μ_a= τ/γ = Kγ(n-1) , for pseudo plastic fluids, n<1 and they’re called Shear thinning liquids and dilatant fluids are called Shear thickening liquids as n>1. Statement 2: Cooked starch solution is a Shear thinning liquid and dairy cream is a Shear thickening liquid.

Statement 1: Apparent viscosity μ_a is related to shear stress (τ) and shear strain (γ) as μ_a= τ/γ. Statement 2: The equation τ=Kγn becomes μ_a= τ/γ = Kγ(n-1) .

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.

Statement 1: Sieder-Tate and Dittus-boelter equations imply only to laminar flow conditions. Statement 2: Under laminar conditions, the same equation applies both to Newtonian and Non-Newtonian fluids.

What will be the dimension of the flow consistency index for a fluid with a flow behaviour index of 3? . b) . c) . d) .

What will be the dimension of the flow consistency index for a fluid with a flow behaviour index of -1?

What is linear_congruential_engine? for some w using Mersenne Twister algorithm b) Pseudo-random number engine that generates random unsigned integers c) Pseudo-random number engine that generates random unsigned integers in the range for some w using lagged Fibonacci generator d) Pseudo-random number engine that generates random signed integers in the range for some w using Mersenne Twister algorithm

For what value of flow behaviour index, does the consistency index has a dimension independent of time?

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