Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ , where A and n are constants.

If n = 1, what type of fluid will it be?

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Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ , where A and n are constants.

If n > 1, what type of fluid will it be?

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Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ , where A and n are constants.

If n < 1, what type of fluid will it be?

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Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ + B , where A, n and B are constants.

Which of the following conditions will hold for a Bingham plastic?

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Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ + B , where A, n and B are constants.

Which of the following conditions will hold for a Rheopectic?

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Q. The relation between shear stress Z and velocity gradient du/dy of a fluid is given by

Z = A * (du/dy)ⁿ + B , where A, n and B are constants.

Which of the following conditions will hold for a Thixotropic fluid?

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Q. Which of the following is a shear-thinnning fluid?

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Q. Which of the following is a shear-thickening fluid?

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

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Q. What will be the dimension of the flow consistency index for a fluid with a flow behaviour index of 3?

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

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Q. Which of the following contribute to the reason behind the origin of surface tension?

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Q. What will be the diameter (in mm) of a water droplet, the pressure inside which is 0.05 N/cm² greater than the outside pressure? (Take surface tension as 0.075 N/m)

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Q. A soap bubble of d mm diameter is observed inside a bucket of water. If the pressure inside the bubble is 0.075 N/cm², what will be the value of d? (Take surface tension as 0.075 N/m)

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Q. A liquid jet of 5 cm diameter has a pressure difference of N/m². (Take surface tension as 0.075 N/m)

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Q. The rise in the level of a liquid in a tube is h. What will be the rise in the level if the same amount of liquid is poured into a tube of half the diameter.

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Q. The ratio of the surface tension S and density ρ of liquid 1 and 2 are 1:2 and 1:4 respectively. Equal amount of the two liquids is poured into two identical tubes. What will be the ratio of the rise in the liquid level in the two tubes? (Assume the angle of contact to be same)

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Q. The rise in the level of a liquid in a tube is h. If half the amount is poured outside, what will be the new rise in liquid level?

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Q. If a glass tube of 10 mm diameter is immersed in water, what will be the rise or fall in capillary?

(Take surface tension = 0.075 N/m, g = 10 m/s² and angle of contact = 0)

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Q. A water drop of diameter 1 cm breaks into 1000 similar droplets of same diameter. What will be the gain or loss in the surface energy? (Take surface tension as 0.075 N/m)

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