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

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

1 to 2

10 to 20

4 to 10

20 to 30

1 to 2

10 to 20

4 to 10

20 to 30

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Process Equipment and Plant Design
In case of design of a shell and tube heat exchanger,

O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres

Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter

All of these

Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch

O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres

Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter

All of these

Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch

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Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

100 and 250

250 and 600

25 and 60

3 and 5

100 and 250

250 and 600

25 and 60

3 and 5

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Process Equipment and Plant Design
In the design of a shell and tube heat exchanger, the corrosion allowance

For internal cover and tube sheet is provided on both the sides

Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc

All of these

For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm

For internal cover and tube sheet is provided on both the sides

Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc

All of these

For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm

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Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

D₂ - D₁

(D₂² - D₁²)/D₂²

(D₂² - D₁²)/D₁²

None of these

D₂ - D₁

(D₂² - D₁²)/D₂²

(D₂² - D₁²)/D₁²

None of these

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Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

Zig-zag

Chain

None of these

Diamond

Zig-zag

Chain

None of these

Diamond

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Process Equipment and Plant Design

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

Process Equipment and Plant Design In case of design of a shell and tube heat exchanger,

Process Equipment and Plant Design Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

Process Equipment and Plant Design In the design of a shell and tube heat exchanger, the corrosion allowance

Process Equipment and Plant Design In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

Process Equipment and Plant Design In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

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

Process Equipment and Plant Design
In case of design of a shell and tube heat exchanger,

Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

Process Equipment and Plant Design
In the design of a shell and tube heat exchanger, the corrosion allowance

Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.