Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________?

Related Mcqs:

1. The circumferential (hoop) stress in a thin walled cylindrical vessel under internal pressure is______________________?

   A. pd/2t
   B. pd/4t
   C. pd/t
   D. pd/3t

2. Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is _____________ the longitudinal stress?

   A. Half
   B. Equal to
   C. Twice
   D. Eight times

3. Pick out the wrong statement pertaining to ‘Horton sphere’ used for the storage of liquid ammonia ?

   A. Diameter of Horton sphere is normally 6 to 25 metres and it is supported by 6 to 12 nos. tubular or rolled section column
   B. Thickness of spherical shell is half that of the cylindrical vessel under same operating pressure condition. Besides, the ratio of surface area to volume is less for sphere than any other shape; hence insulation required is less
   C. Horton sphere is used for the storage of gases and volatile liquid at a moderate pressure of 1 to 10 kg/cm2
   D. Horton sphere is used for the storage of liquid at sub-zero temperature at very high pressure upto 200 kg/cm2

4. The longitudinal stress induced in a thin walled cylindrical vessel under internal pressure is_________________?

   A. pd/2t
   B. pd/4t
   C. pd/t
   D. pd/8t

5. Longitudinal stress induced in a thin walled cylindrical storage vessel is __________________?

   A. pD/2t
   B. pD/4t
   C. pD/3t
   D. pD/6t

6. In a thin cylindrical shell, the hoop stress is ________________ stress?

   A. Radial
   B. Circumferential tensile
   C. Compressive
   D. Longitudinal

7. The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?

   A. Working
   B. Damaging
   C. Allowable
   D. None of these

8. In a cylindrical vessel subjected to internal pressure, the longitudinal stress ζL and the circumferential stress, ζn are related by___________________?

   A. ζh = 2 ζL
   B. ζh = ζL
   C. ζh = ζL/2
   D. No relation exists

9. Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than ______________ kilolitres?

   A. 20
   B. 30
   C. 45
   D. 85

10. The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure?

    A. 1.5 to 2
    B. 3 to 4
    C. 4 to 5
    D. > 5