____________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.)?

Byadmin March 2, 2019August 23, 2021

____________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.)?

A. Hemispherical
B. Dished
C. Ellipsoidal
D. Conical

Process Equipment and Plant Design

To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of_________________?

To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of_________________?

A. (1.2)3/2
B. (1.2)3/5
C. (1.2)2/3
D. (1.2)5/3

Read More To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of_________________?
Process Equipment and Plant Design

Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about _____________ kcal/hr.m2.°C?

Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about _____________ kcal/hr.m2.°C?

A. 1250
B. 2500
C. 7500
D. 15000

Read More Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about _____________ kcal/hr.m2.°C?
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

Vapor velocity in a distillation column for non-foaming mixture is in the range of ______________ times the flooding velocity?

Vapor velocity in a distillation column for non-foaming mixture is in the range of ______________ times the flooding velocity?

A. 0.1 to 0.3
B. 0.6 to 0.7
C. 0.85 to 0.95
D. 1.5 to 2

Read More Vapor velocity in a distillation column for non-foaming mixture is in the range of ______________ times the flooding velocity?
Process Equipment and Plant Design

Maximum size of the raschig rings used in a packed tower is about _______________ of the column diameter?

Maximum size of the raschig rings used in a packed tower is about _______________ of the column diameter?

A. 1/10th
B. 1/20th
C. 1/30th
D. 1/50th

Read More Maximum size of the raschig rings used in a packed tower is about _______________ of the column diameter?
Process Equipment and Plant Design

Height of the flights in the rotary drier is in the range of___________________?

Height of the flights in the rotary drier is in the range of___________________?

A. 0.08 to 0.12 d
B. 0.02 to 0.05 d
C. 0.2 to 0.5 d
D. 0.5 to 0.6 d

Read More Height of the flights in the rotary drier is in the range of___________________?

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