If the packing density (α) is defined as the volume of the fiber unit volume of filter bed, the velocity within the filter void space is equal to (where V is velocity in fluid void space and V0 is undisturbed fluid velocity)

Question: If the packing density (α) is defined as the volume of the fiber unit volume of filter bed, the velocity within the filter void space is equal to (where V is velocity in fluid void space and V0 is undisturbed fluid velocity)
[A].

V = V0/(1-α)

[B].

V-V0 = 1 – α

[C].

V = V0(1 – α)

[D].

V = V0/(1 + α)

Answer: Option A

Explanation:

No answer description available for this question.

The moist heat is more effective than the dry heat because the intrinsic heat resistance of vegetative cells is greatly

Question: The moist heat is more effective than the dry heat because the intrinsic heat resistance of vegetative cells is greatly
[A].

increased in a dry state

[B].

decreased in a dry state

[C].

increased in a wet state

[D].

decreased in a wet state

Answer: Option A

Explanation:

No answer description available for this question.

Glass fibers are favorable as a filter medium because they give a

Question: Glass fibers are favorable as a filter medium because they give a
[A].

lower pressure drop and are less liable to wetting or combustion

[B].

more pressure drop and are less liable to wetting or combustion

[C].

lower pressure drop and are more liable to wetting or combustion

[D].

more pressure drop and are more liable to wetting or combustion

Answer: Option A

Explanation:

No answer description available for this question.

Analogus to the molecular diffusion, the x-directional flux of microorganisms suspended in a medium due to the axial mixing can be represented as (where Jn is flux component ‘n’, cn is concentration of’n’)

Question: Analogus to the molecular diffusion, the x-directional flux of microorganisms suspended in a medium due to the axial mixing can be represented as (where Jn is flux component ‘n’, cn is concentration of’n’)
[A].

Jn = -dcn/dx

[B].

Jn = dcn/dx

[C].

Jn = -D dcn/dx

[D].

Jn = D dcn/dx

Answer: Option C

Explanation:

No answer description available for this question.