Process Equipment and Plant Design

101. Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

1. Rupture diaphragm
2. Dikes
3. Surge chamber
4. None of these

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102. Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

1. Same
2. Less
3. About 3 times
4. About 0.33 times

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103. Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as h_G = 0.0176G^0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

1. h_G = 1.004G^0.37
2. 1.004G^0.8
3. hG = 0.0176G^0.37
4. 0.0176G^1.37

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104. Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripping and humidification/dehumidification. HETP which is experimentally determined, depends upon the

1. Flow rates of each fluid
2. Type and size of packing
3. Concentration of each fluid
4. All a, b & c

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105. Height of the flights in the rotary drier is in the range of

1. 0.08 to 0.12 d
2. 0.02 to 0.05 d
3. 0.2 to 0.5 d
4. 0.5 to 0.6 d

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106. High pressure fluid in a shell and tube heat exchanger should preferably be routed through the

1. Tubes to avoid the expansion of high pressure shell construction
2. Shell side for smaller total pressure drop
3. Shell side, if the flow is counter-current and tube side if the flow is co-current
4. Shell side for large overall heat transfer co-efficient

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107. Hold up of material in a operating rotary drier is in the range of

1. 0.05 to 0.15
2. 0.25 to 0.50
3. 0.5 to 0.8
4. 0.8 to 0.9

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108. Hole diameter of the sieve trays in the distillation column ranges from _________ mm.

1. 1 to3
2. 4 to 8
3. 3 to 12.5
4. 12.5 to 18.5

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109. Holes of a sieve tray are arranged in triangular pitch of _________ times the hole diameter.

1. 1.5 to 2
2. 2.5 to 5
3. 5 to 10
4. 10 to 15

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110. Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

1. pD/2T
2. pD/4T
3. pD/3T
4. pD/6T

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