In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Less than that for fluid flow

More than that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Same as that for fluid flow

Less than that for fluid flow

More than that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Same as that for fluid flow

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Process Equipment and Plant Design
Seamless pipe is made

By extrusion & casting into static and centrifugal molds

Both B and C

From rolled strips formed into cylinders and seam-welded

By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

By extrusion & casting into static and centrifugal molds

Both B and C

From rolled strips formed into cylinders and seam-welded

By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

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Process Equipment and Plant Design
To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

0.5 d

D

2.5 d

1.5 d

0.5 d

D

2.5 d

1.5 d

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Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Sensible heat changes for vapour & liquid are negligibly small

Heat of mixing of normal liquid is assumed to be zero

Reflux is not a saturated liquid

Molar latent heat of the two components are equal

Sensible heat changes for vapour & liquid are negligibly small

Heat of mixing of normal liquid is assumed to be zero

Reflux is not a saturated liquid

Molar latent heat of the two components are equal

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

8

2

4

1/2

8

2

4

1/2

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

None of these

Tall (say 30 metres), but is full of liquid

Tall but empty

Short (< 2 m) and housed indoor

None of these

Tall (say 30 metres), but is full of liquid

Tall but empty

Short (< 2 m) and housed indoor

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Process Equipment and Plant Design

Process Equipment and Plant Design In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design Seamless pipe is made

Process Equipment and Plant Design To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

Process Equipment and Plant Design Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

Process Equipment and Plant Design Wind load consideration in the design of a support can be neglected, when the vessel is

Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design
Seamless pipe is made

Process Equipment and Plant Design
To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is