Stage efficiency for packed tower varies with the____________________?

Byadmin March 2, 2019August 23, 2021

Stage efficiency for packed tower varies with the____________________?

A. Type & size of packing
B. Fluid rates and fluid properties
C. Operating pressure and column diameter
D. All A., B. and C.

Process Equipment and Plant Design

Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the_____________________?

Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the_____________________?

A. Sensible heat differences are small, because the temperature changes from tray to tray is small
B. Trouton’s rule is applicable
C. Liquid/vapor loading across the column remains constant
D. All A., B. and C.

Read More Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the_____________________?
Process Equipment and Plant Design

Value of Peclet number = ∞, is the representative of___________________?

Value of Peclet number = ∞, is the representative of___________________?

A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0

Read More Value of Peclet number = ∞, is the representative of___________________?
Process Equipment and Plant Design

In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?

In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?

A. 3-5
B. 5-11
C. 8-15
D. 12-18

Read More In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?
Process Equipment and Plant Design

The stress developed in a material without any permanent set is called the____________________?

The stress developed in a material without any permanent set is called the____________________?

A. Ultimate stress
B. Yield stress
C. Elastic limit
D. Breaking stress

Read More The stress developed in a material without any permanent set is called the____________________?
Process Equipment and Plant Design

Length to diameter ratio of most rotary driers is in the range of____________________?

Length to diameter ratio of most rotary driers is in the range of____________________?

A. 1 to 2
B. 4 to 10
C. 10 to 20
D. 20 to 30

Read More Length to diameter ratio of most rotary driers is in the range of____________________?
Process Equipment and Plant Design

In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?

In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?

A. 2.5
B. 7.5
C. 15
D. 20

Read More In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?

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