At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter.

Mechanical Operations
At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter.

Po ∝ Re0.0

Po ∝ Re1.0

Po ∝ Re0.5

Po ∝ Re-1.0

Po ∝ Re0.0

Po ∝ Re1.0

Po ∝ Re0.5

Po ∝ Re-1.0

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Mechanical Operations
Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation?

Jaw plates

Crush shaft

Toggles

Check plates

Jaw plates

Crush shaft

Toggles

Check plates

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Mechanical Operations
The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle).

4/D.p

2/D.p

6/D.p

12/D.p

4/D.p

2/D.p

6/D.p

12/D.p

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Mechanical Operations
The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be

0.5 Wi

3.34 Wi

1.34 Wi

Wi

0.5 Wi

3.34 Wi

1.34 Wi

Wi

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Mechanical Operations
Which of the following is the most suitable for handling fibrous and dense slurries?

Radial propeller agitator

Cone type agitator

Turbine agitator

Propeller agitator

Radial propeller agitator

Cone type agitator

Turbine agitator

Propeller agitator

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Mechanical Operations
Compressibility co-efficient for an absolutely compressible cake is

∞

1

0 to 1

∞

1

0 to 1

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Mechanical Operations

Mechanical Operations Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation?

Mechanical Operations The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle).

Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be

Mechanical Operations Which of the following is the most suitable for handling fibrous and dense slurries?

Mechanical Operations Compressibility co-efficient for an absolutely compressible cake is

Mechanical Operations
Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation?

Mechanical Operations
The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle).

Mechanical Operations
The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be

Mechanical Operations
Which of the following is the most suitable for handling fibrous and dense slurries?

Mechanical Operations
Compressibility co-efficient for an absolutely compressible cake is