For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as
A. Np ∝ NRe
B. Np ∝ $$\sqrt {{{\text{N}}_{{\text{Re}}}}} $$
C. Np → constant
D. Np ∝ $$\frac{1}{{{{\text{N}}_{{\text{Re}}}}}}$$
Answer: Option D
Related Questions on Mechanical Operations
A. Rittinger's law
B. Kick's law
C. Bond's law
D. None of these
Traces of solids are removed from, liquid in a
A. Classifier
B. Clarifier
C. Sparkler filter
D. Rotary vacuum filter
Which of the following is not categorised as a "mechanical operation"?
A. Agitation
B. Filtration
C. Size enlargement
D. Humidification
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