____________________ strain is measured using a ‘strain rosetter’ ?

Related Mcqs:

1. Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, ζ = yield strength and E = modulus of elasticity) ?

   A. E
   B. ζ
   C. ζ/E
   D. E/ζ

2. The ratio of lateral strain to linear strain is termed as the___________________?

   A. Poisson’s ratio
   B. Bulk modulus
   C. Modulus of elasticity
   D. Shear modulus

3. The ratio of linear stress to linear strain is termed as the ____________________?

   A. Modulus of elasticity
   B. Modulus of rigidity
   C. Bulk modulus
   D. None of these

4. Poisson’s ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson’s ratio for structural and pressure vessel steel may be taken as ____________________?

   A. 0.01
   B. 0.3
   C. 0.75
   D. 0.95

5. The ratio of shear stress to shear strain is called ____________________?

   A. Bulk modulus
   B. Shear modulus
   C. Modulus of rigidity
   D. Modulus of elasticity

6. Maximum allowable vapour velocity in a bubble cap tower is determined by the ____________________?

   A. Entrainment considerations
   B. Vapour density
   C. Diameter of the column
   D. None of these

7. In the design of a shell and tube heat exchanger, the corrosion allowance ____________________?

   A. Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
   B. For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe
   conditions it is 3 mm
   C. For internal cover and tube sheet is provided on both the sides
   D. All A., B. & C.

8. For a given fluid, as the pipe diameter increases, the pumping cost ____________________?

   A. Decreases
   B. Increases
   C. Remain unaffected
   D. May increase or decrease depending upon whether the fluid is Newtonian or non-Newtonian

9. Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscosity above ____________________ poise?

   A. 300
   B. 600
   C. 1000
   D. 1500

10. Weep holes provided in the plates of a distillation column ____________________?

    A. Facilitate draining out liquid from a tray when the unit is not in operation
    B. Are normally located near the overflow weir so that any delivery of liquid during operation
    follows approximately the same path as the overflow fluid
    C. Must be large enough (usually 1/4″ to 5/8″ dia) to prevent plugging but should not deliver
    excessive amount of fluid during operation
    D. All A., B. and C.