Process Equipment and Plant Design

11. _________ strain is measured using a 'strain rosetter'.

1. Volumetric
2. Shear
3. Linear
4. None of these

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12. _________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

1. Sieve plate
2. Packed
3. Bubble cap plate
4. None of these

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13. _________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

1. Radial flow
2. Cross flow
3. Split flow
4. Cascade

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14. (L_e/D) for 90° elbow (medium radius) and 90°square elbow would be respectively around

1. 25 and 60
2. 3 and 5
3. 100 and 250
4. 250 and 600

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15. (L_e/D) for a Tee (used as elbow, entering run) would be around

1. 5
2. 60
3. 160
4. 200

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16. (Le/D) for a Tee (used as elbow, entering branch) would be

1. Less than that for Tee (used as elbow, entering run)
2. More than that for Tee (used as elbow, entering run)
3. Around 90
4. Both (B) and (C)

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17. (Le/D) for couplings and unions would be

1. 60
2. 200
3. 350
4. Negligible

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18. (Le/D) for fully open gate valves would be

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

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19. (Le/D) for fully open globe value may be around

1. 10
2. 25
3. 75
4. 300

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20. 1.2 to 3.8 cms is the value of the

1. Downcomer liquid seal in case of a balanced tray design
2. Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm)
3. Skirt clearance for bubble caps
4. All (A), (B) and (C)

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