- (A) (BTU/hr.ft2. °F)-1
- (B) (kcal/hr.m2.°C)-1
- (C) (W/m2.°K)-1
- (D) (kcal/hr. m. °C)-1
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- (A) If its diameter is less than 15-20metres
- (B) If its diameter is more than 50 meters
- (C) If the thickness of the roof is more than that of the cylindrical shell
- (D) Irrespective of its diameter
- (A) Withstand higher pressure for a given metallic shell thickness
- (B) Be fabricated very easily
- (C) Be designed without wind load considerations
- (D) Be supported very easily
- (A) 0.01 to 1
- (B) 1.5 to 2.5
- (C) 5 to 10
- (D) 10 to 20
- (A) 0.1-0.12
- (B) 0.4-0.5
- (C) 0.45-0.6
- (D) 0.2-0.45
- (A) Brackets
- (B) Skirts
- (C) Columns
- (D) Saddles
- (A) Strain
- (B) Stress
- (C) Modular ratio
- (D) None of these
- (A) Tube dia is 3-6 cms, while tube length in 3-6 metres
- (B) Steam is fed to the shell, whereas the liquor is filled inside the tube
- (C) Liquor level is maintained at 1/3rd to 1/2 of the height of the tube
- (D) None of these
- (A) Lower fixed charges for the column
- (B) Greater cost for the reboiler heat supply
- (C) Greater cost for the condenser coolant
- (D) All
- (A) < 10
- (B) > 10
- (C) > 20
- (D) < 20
