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71
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.
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Answer: Option B
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72
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.
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Answer: Option A
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73
For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.
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Answer: Option A
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74
Baffle width is normally taken as __________ times the tank diameter.
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Answer: Option A
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75
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.
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Answer: Option B
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76
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5 - 10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.
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Answer: Option A
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77
The equivalent diameter for pressure drop is __________ that for heat transfer.
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Answer: Option D
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78
Baffle spacing is generally __________ the I.D. of the shell.
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Answer: Option D
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79
In a shell and tube heat exchanger, tube side __________ of the mass velocity.
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Answer: Option C
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80
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.
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Answer: Option B
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