Process Equipment and Plant Design

61. Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of _________ type.

  1. Nozzle or rim
  2. Flared out
  3. Fluid in
  4. Ring plate

Correct answer: (A)
Nozzle or rim

62. Cooling water fouling factors vary in the range of 0.001 to 0.003

  1. (BTU/hr.ft2. °F)-1
  2. (kcal/hr.m2.°C)-1
  3. (W/m2.°K)-1
  4. (kcal/hr. m. °C)-1

Correct answer: (A)
(BTU/hr.ft2. °F)-1

63. Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

  1. Ultimate stress to breaking stress
  2. Ultimate stress to working stress
  3. Working stress to ultimate stress
  4. None of these

Correct answer: (B)
Ultimate stress to working stress

64. Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if

  1. Plain carbon steel and cast iron parts are used
  2. Wall thickness is > 30 mm
  3. Material of construction is high alloy steel
  4. Both (B) & (C)

Correct answer: (D)
Both (B) & (C)

65. Cylindrical pressure vessels in horizontal condition is generally supported on a _________ support.

  1. Lug
  2. Skirt
  3. Saddle
  4. Guy wire

Correct answer: (C)
Saddle

66. Cylindrical shell thickness of rotary drier is generally _________ mm.

  1. 43892
  2. 18-22
  3. 44049
  4. 42339

Correct answer: (C)
44049

67. Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have _________ roofs.

  1. Conical
  2. Flat
  3. Floating
  4. Fixed

Correct answer: (C)
Floating

68. Diameter of bubble caps used in high pressure columns is _________ as compared to that used in identical vacuum columns.

  1. Less
  2. More
  3. Same
  4. Either (A) or (B); no generalisation can be made

Correct answer: (B)
More

69. Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

  1. d = 1.1 t
  2. d = 1.6 √t
  3. d = 1.5 t
  4. d = 3 √t

Correct answer: (B)
d = 1.6 √t

70. Diameter of the sieve tray column is determined by the

  1. Lower limit of vapour velocity
  2. Upper limit of the vapour velocity
  3. Hole diameter of the sieve tray
  4. Height of the plate spacing

Correct answer: (B)
Upper limit of the vapour velocity

Previous
Page 7 of 37
Next
Copyright © EngineeringMCQ.com