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Process Equipment and Plant Design

Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

10 to 15
5 to 10
2.5 to 5
1.5 to 2

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Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

1.25
3.5
1.75
2.5

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Process Equipment and Plant Design
Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

McCabe-Thiele's method
Sorel-Lewis method
None of these
Ponchon-Savarit method

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate
Electrode area
Neither A nor B
Both A & B

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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

D
1.5 d
0.5 d
2.5 d

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Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

Is directly proportional to the radius of the dust particle path
None of these
Is inversely proportional to the mass of the dust particle
Decreases with increase in gas flow rate

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