A spherical particle of diameter 1 µm and density 1200kg/m3 is falling freely through a column of water with a velocity of 0.7 m/s. Considering the viscosity of water to be 8.× 10-4 kg/ms and acceleration due to gravity as 9.8 m/scalculate the terminal velocity of the particle.
a) 0.34 × 10-6 m/s
b) 1.34 × 10-7 m/s
c) 1.34 × 10-8 m/s
d) 2.34 × 10-7 m/s
Q.2.
What is the diameter of a particle that has a density ofkg/m3 and flows through water under laminar conditions. Assume viscosity of water as 8.× 10-4 kg/ms. The terminal velocity is found to be 0.m/s.
a) 0.9 µm
b) 1 µm
c) 0.4 µm
d) 0.7 µm
Q.3.
What is the terminal settling velocity of spherical particle flowing through a liquid of densitykg/m3 and Reynolds numberwith a velocity 0.m/s? The diameter of the particle ism a its density itkg/m3.
a) 2.3 m/s
b) 2.5 m/s
c) 2 m/s
d) 2.7 m/s
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