Related Questions

Dust collection efficiency of a cyclone separator depends upon its
A Diameter
B Inlet gas velocity
C Overall height
D All of the above
The dust collection efficiency of a cyclone separator
A Decreases with increase in gas flow rate
B Is inversely proportional to the mass of the dust particle
C Is directly proportional to the radius of the dust particle path
D None of these
In the cyclone separator used for separation of dust from dust laden gas, the gas
A Enters the cyclone from the top
B Is admitted tangentially at high velocity
C Develops a helical motion inside the chamber
D Both B and C
Operating principle of cyclone separator is based on the action of __________ dust particles.
A Diffusion of
B Centrifugal force on
C Gravitational force on
D Electrostatic force on
Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a
A Disc bowl centrifuge
B Sharpies supercentrifuge
C Batch basket centrifuge
D Sparkler filter
The dust collection efficiency of electrostatic precipitator increases with increase in the
A Gas flow rate
B Electrode area
C Both A & B
D Neither A nor B
Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?
A reverse vacuum
B any small vacuum device
C blow real hard on the system board
D use a lint-free cloth and wipe gently
E non-static compressed air
'Disasters we live with' is a story based on a cyclone. The cyclone took place in Bangladesh in-
A 1990
B 1991
C 1992
D 1993
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.
A Smallest
B Largest
C Either A or B
D Neither A nor B

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