The type of stress developed in a metallic bar on subjecting it to a change in temperature without allowing it to be deformed is ______________ stress?

Related Mcqs:

1. 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

2. The thermal stress in a metallic bar does not depend upon the_____________________?

   A. Changes in temperature
   B. Cross-sectional area
   C. Both A. and B.
   D. Neither A. nor B.

3. The stress developed in a material without any permanent set is called the____________________?

   A. Ultimate stress
   B. Yield stress
   C. Elastic limit
   D. Breaking stress

4. 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

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

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

6. 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

7. The necessary wall thickness for a metallic storage vessel is a function of the ___________________?

   A. Ultimate tensile strength (or yield point) of the material and operating temperature
   B. Operating pressure and welding/joint efficiency
   C. Diameter of the vessel
   D. All A., B. and C.

8. Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally ____________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8″)?

   A. Half
   B. Three fourth
   C. Equal to
   D. 1.5 times

9. In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?

   A. Two
   B. Five
   C. Ten
   D. Twenty

10. 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?

    A. Nozzle or rim
    B. Flared out
    C. Fluid in
    D. Ring plate