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Process Equipment and Plant Design

Process Equipment and Plant Design
Brass valves are usually made for pipe sizes __________ inches.

>3.5
?2
>2.5
?1

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Process Equipment and Plant Design
For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.

1 to 1.5
6 to 8
4 to 5
2.5 to 3.5

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

(0.8)0.5
1
0.9
0.8

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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

(1.2)3/2
(1.2)5/3
(1.2)3/5
(1.2)2/3

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Process Equipment and Plant Design
The units of Young's modulus of elasticity and __________ are the same.

Stress
Modular ratio
None of these
Strain

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

4 A/P
A/P
4 P/A
√A

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