Allied & ICAR Exam Bank • ALLIED_0765 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Food Rheology

Subtopic: Food Rheology

Question Statement:

Tomato paste exhibits Bingham plastic behavior with yield stress $\tau_0 = 30\text{ Pa}$ and plastic viscosity $\mu_p = 0.5\text{ Pa}\cdot\text{s}$. At shear rate $\dot{\gamma} = 40\text{ s}^{-1}$, shear stress $\tau = \tau_0 + \mu_p \dot{\gamma} = 30 + 0.5(40)$ in Pa is:

Answer Key:

50

Step-by-Step Solution & Explanation

$\tau = 30 + 20 = 50.0\text{ Pa}$.
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