Process Equipment And Plant Design MCQ

Test your knowledge with important Process Equipment And Plant Design MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Process Equipment And Plant Design MCQs on Bissoy. Bissoy App

• Needle valves are generally not used for
  ক

  Very large diameter pipes

  খ

  High pressure throttling service

  গ

  Very accurate flow control

  ঘ

  Smaller sizes of pipe
• Liquid gradient over a tray can be minimised by
  ক

  Providing a higher skirt clearance or a higher weir

  খ

  Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must flow

  গ

  Using split flow, radial flow or cascade flow for column diameter large than 4 ft

  ঘ

  All of the above
• In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
  ক

  Are easier to clean

  খ

  Are less prone to fouling

  গ

  Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

  ঘ

  None of these
• With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.
  ক

  Fixed charges initially

  খ

  Running cost of cooling water for condenser

  গ

  Vapour & liquid load both

  ঘ

  Running cost of steam for reboiler
• Hole diameter of the seive trays in the distillation column ranges from __________ mm.
  ক

  1 to 3

  খ

  4 to 8

  গ

  3 to 12.5

  ঘ

  12.5 to 18.5
• Two iron pipes of the same nominal diameter but different schedule numbers will have the same
  ক

  Inside diameter

  খ

  Outside diameter

  গ

  Wall thickness

  ঘ

  None of these
• The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from
  ক

  2 to 3

  খ

  3 to 5

  গ

  4 to 8

  ঘ

  6 to 12
• Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to
  ক

  5 cms

  খ

  40% of the I.D. of the shell

  গ

  25 cms

  ঘ

  I.D. of the shell
• Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
  ক

  5-10

  খ

  15-20

  গ

  30-35

  ঘ

  35-40
• In a shell and tube heat exchanger, the 'tube pitch' is defined as the
  ক

  O.D. of the tube for square pitch

  খ

  Shortest distance between two adj acent tube holes

  গ

  Shortest centre to centre distance between adjacent tubes

  ঘ

  None of these
• Larger depth of liquid on the trays of a distillation column
  ক

  Leads to high tray efficiency

  খ

  Results in higher pressure drop per tray

  গ

  Both A & B

  ঘ

  Neither A nor B
• The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the
  ক

  Equal sized reactors are the best

  খ

  Smaller reactor should come first

  গ

  Larger reactor should come first

  ঘ

  None of these
• In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.
  ক

  n^th

  খ

  $${\left( {\frac{1}{{\text{n}}}} \right)^{{\text{th}}}}$$

  গ

  0.5 n^th

  ঘ

  1.5 n^th
• Spherical shaped pressure vessel is considered to be the most ideal, because it can
  ক

  Withstand higher pressure for a given metallic shell thickness

  খ

  Be fabricated very easily

  গ

  Be designed without wind load considerations

  ঘ

  Be supported very easily
• For turbine agitator, the impeller diameter is about
  ক

  0.3 to 0.5 d

  খ

  0.1 to 0.2 d

  গ

  0.65 to 0.85 d

  ঘ

  0.95 d
• For high pressure process equipments/vessels, the connected nozzle should be
  ক

  Welded

  খ

  Screwed

  গ

  Flanged

  ঘ

  Brazed
• Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.
  ক

  Less than

  খ

  More than

  গ

  Same as

  ঘ

  Either more or less (depending upon relative volatility)
• Length to diameter ratio of most rotary driers is in the range of
  ক

  1 to 2

  খ

  4 to 10

  গ

  10 to 20

  ঘ

  20 to 30
• The raio, (properller agitator dia/tank dia) is normally taken as
  ক

  0.15-030

  খ

  0.5-0.65

  গ

  0.75-0.85

  ঘ

  0.60-0.90
• In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as
  ক

  0.1

  খ

  0.8

  গ

  0.25

  ঘ

  0.5
• In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.
  ক

  1

  খ

  8

  গ

  80

  ঘ

  180
• What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?
  ক

  6.5 cms

  খ

  6.5 mm

  গ

  Equal to tube I.D

  ঘ

  Equal to tube O.D
• Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )
  ক

  0.2 D

  খ

  0.5 D

  গ

  0.66 D

  ঘ

  0.80 D
• Lug support is meant for supporting __________ vessels.
  ক

  Large horizontal cylindrical

  খ

  Tall but empty

  গ

  Small

  ঘ

  Thick walled tall
• Skirt support is the most suitable for supporting __________ vessels.
  ক

  Small horizontal

  খ

  Large horizontal

  গ

  Tall vertical

  ঘ

  Thick walled
• Saddle supports are used for supporting __________ vessels.
  ক

  Horizontal cylinderical

  খ

  Tall vertical

  গ

  Thick walled vertical

  ঘ

  Thick spherical
• Bracket supports are the most suitable for supporting __________ vessels.
  ক

  Thick walled vertical

  খ

  Horizontal

  গ

  Thin shperical (e.g. Horton sphere)

  ঘ

  None of these
• The distance between the centre of a rivet hole to the nearest edge of the plate is called
  ক

  Pitch

  খ

  Margin

  গ

  Back pitch

  ঘ

  None of these
• Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.
  ক

  20

  খ

  30

  গ

  45

  ঘ

  85
• Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.
  ক

  10

  খ

  20

  গ

  30

  ঘ

  5