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Process Equipment and Plant Design

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

2.5
1.5
0.5
3.5

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Process Equipment and Plant Design
Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.

20
30
45
85

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/3t
pd/2t
pd/4t
pd/t

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Process Equipment and Plant Design
Cooling water fouling factors vary in the range of 0.001 to 0.003

(kcal/hr.m² .°C)⁻¹
(kcal/hr. m. °C)⁻¹
(W/m².°K)⁻¹
(BTU/hr.ft² . °F)⁻¹

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Back pitch
None of these
Margin
Pitch

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing
Eddy diffusivity = 0
Plug flow
Laminar flow

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