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Process Equipment and Plant Design

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
Le/D for fully open gate valves would be

Both B and C
Much less (say 2% than that for fully open globe valves)
Around 7
Much more than that for fully open globe valves

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Process Equipment and Plant Design
25 per cent cut segmental baffle means that the baffle

Width is 25% of its height
Height is 25% of the I.D. of the shell
Spacing is 75% of its height
Height is 75% of the I.D. of the shell

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Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from

1.5 to 2.5
10 to 20
0.01 to 1
5 to 10

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Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

2500
15000
7500
1250

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Process Equipment and Plant Design
Which of the following material is seldom used for pressure vessel construction?

Semi-killed steel
Rimmed still
Killed steel
Mild steel

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