Mechanical Operations

The most common filter aid is_________________?

Byadmin February 18, 2019August 22, 2021

The most common filter aid is_________________?

A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel

Mechanical Operations

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

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

A. 6/D.ρ
B. 2/D.ρ
C. 4/D.ρ
D. 12/D.ρ

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

All resistances during washing of cake _____________________?

All resistances during washing of cake _____________________?

A. Increases
B. Decreases
C. Remain constant
D. None of these

Read More All resistances during washing of cake _____________________?
Mechanical Operations

Reciprocal of sphericity is termed as the________________?

Reciprocal of sphericity is termed as the________________?

A. Specific surface ratio
B. Shape factor
C. Sauter diameter
D. Surface area per unit mass

Read More Reciprocal of sphericity is termed as the________________?
Mechanical Operations

The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

A. c/s
B. s/c
C. s . c
D. 1/s . c

Read More The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?
Mechanical Operations

The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?

The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?

A. 2
B. √2
C. 1.5
D. √3

Read More The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?
Mechanical Operations

_____________ conveyors are also called scrapers?

_____________ conveyors are also called scrapers?

A. Apron
B. Screw
C. Helical flight
D. Both B. & C.

Read More _____________ conveyors are also called scrapers?

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