Question

In a process of separation of particle using cyclone separator, centrifugal force acting on the particle can be increased by:

• A. Increasing radius of rotation
• B. Reducing radius of rotation
• C. Increasing acceleration due to gravity
• D. Reducing tangential velocity of particle

Hint:

Centrifugal force \(\propto\) 1/r.
Smaller radius = higher centrifugal force.
Also \(\propto\) v\(^2\).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Cyclone separators use centrifugal force for separation.
Centrifugal force depends on certain parameters.

Step 2: Key Formula or Approach:
Centrifugal force = m \(\times\) v\(^2\) r.
Where m is mass, v is tangential velocity, r is radius of rotation.

Step 3: Detailed Explanation:
From the formula, centrifugal force is inversely proportional to radius.
Increasing radius decreases the force.
Reducing radius increases the force.
Gravity is not a factor in cyclone separators.
Reducing tangential velocity decreases the force.
Thus, reducing radius of rotation increases centrifugal force.

Step 4: Final Answer:
Centrifugal force can be increased by reducing radius of rotation.
Hence, the correct option is (B).