Agitation And Aeration | Biochemical Engineering

The power required by an impeller in a gas sparged system compare to the power required by impeller operating at same speed in a gas free liquid is usually

Byadmin July 20, 2022

Question: The power required by an impeller in a gas sparged system compare to the power required by impeller operating at same speed in a gas free liquid is usually
[A].

lesser

[B].

higher

[C].

same

[D].

may be lesser or higher depending upon the geometry

Answer: Option A

Explanation:

No answer description available for this question.

Biochemical Engineering | Immobilized Enzyme

For a steady state condition, the change of substrate concentration (dCs/dt) is

Question: For a steady state condition, the change of substrate concentration (dCs/dt) is
[A].

zero
[B].
1
[C].
>1
[D].
<1

Answer: Option A

Explanation:

No answer description available for this question.

Read More For a steady state condition, the change of substrate concentration (dCs/dt) is
Biochemical Engineering | Sterilization

For the turbulent flow, the dispersion coefficient is correlated as a function of

Question: For the turbulent flow, the dispersion coefficient is correlated as a function of
[A].

Reynolds number
[B].
Sherwood number
[C].
Schmidt number
[D].
Grashof number

Answer: Option A

Explanation:

No answer description available for this question.

Read More For the turbulent flow, the dispersion coefficient is correlated as a function of
Agitation And Aeration | Biochemical Engineering

Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?

Question: Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?
[A].

Anemometer
[B].
Manometer
[C].
Tachometer
[D].
Barometer

Answer: Option C

Explanation:

No answer description available for this question.

Read More Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?
Agitation And Aeration | Biochemical Engineering

For laminar flow, Reynolds number is correlated with power number as (where K, a constant which depends on the container geometry and shape of stirrer; Rei is Reynolds number for agitator; Di, stirrer diameter and N, stirrer speed)

Question: For laminar flow, Reynolds number is correlated with power number as (where K, a constant which depends on the container geometry and shape of stirrer; Rei is Reynolds number for agitator; Di, stirrer diameter and N, stirrer speed)
[A].

Np = K(Rei)-1
[B].
Np = N2Di(Rei)-1
[C].
Np = K(Rei)
[D].
Np = KNDi(Rei)-2

Answer: Option A

Explanation:

No answer description available for this question.

Read More For laminar flow, Reynolds number is correlated with power number as (where K, a constant which depends on the container geometry and shape of stirrer; Rei is Reynolds number for agitator; Di, stirrer diameter and N, stirrer speed)
Biochemical Engineering | Enzymes And Application

The enzyme used to reduce bitterness of grapes commonly contains

Question: The enzyme used to reduce bitterness of grapes commonly contains
[A].

α-L-rhamonosidase
[B].
β-d-glucosidase
[C].
β- galactosidase
[D].
both (a) and (b)

Answer: Option D

Explanation:

No answer description available for this question.

Read More The enzyme used to reduce bitterness of grapes commonly contains
Biochemical Engineering | Fluid Flow

A thixotropic fluid is one in which the viscosity

Question: A thixotropic fluid is one in which the viscosity
[A].

is constant regardless of the stirrer speed or mixing time
[B].
changes during mixing but returns to its original state after mixing
[C].
increases with mixing time
[D].
decreases with mixing time

Answer: Option D

Explanation:

No answer description available for this question.

Read More A thixotropic fluid is one in which the viscosity

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