Mechanical Properties of Fluids
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Question : 3
Total: 31
Fill in the blanks using the word(s) from the list appended with each statement :
(a) Surface tension of liquids generally ... with temperatures (increases/ decreases)
(b) Viscosity of gases ... with temperature, whereas viscosity of liquids ... with temperature (increases/decreases)
(c) For solids with elastic modulus of rigidity, the shearing force is proportional to ...., while for fluids it is proportional to .... (shear strain/rate of shear strain)
(d) For a fluid in a steady flow, the increase in flow speed at a constriction follows...... (conservation of mass/Bernoulli’s principle)
(e) For the model of a plane in a wind tunnel, turbulence occurs at a ...speed than for turbulence for an actual plane (greater/smaller)
(a) Surface tension of liquids generally ... with temperatures (increases/ decreases)
(b) Viscosity of gases ... with temperature, whereas viscosity of liquids ... with temperature (increases/decreases)
(c) For solids with elastic modulus of rigidity, the shearing force is proportional to ...., while for fluids it is proportional to .... (shear strain/rate of shear strain)
(d) For a fluid in a steady flow, the increase in flow speed at a constriction follows...... (conservation of mass/Bernoulli’s principle)
(e) For the model of a plane in a wind tunnel, turbulence occurs at a ...speed than for turbulence for an actual plane (greater/smaller)
Solution:
(a) decreases
(b) increases; decreases
(c) shear strain; rate of shear strain
(d) conservation of mass of Bernoulli’s principle
(e) greater.
(b) increases; decreases
(c) shear strain; rate of shear strain
(d) conservation of mass of Bernoulli’s principle
(e) greater.
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