Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2) ?

Related Mcqs:

1. Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young’s modulus, G = Modulus of rigidity or shear modulus v = Poisson’s ratio) ?

   A. E = 2G (1 + v)
   B. E = G (1 + v)
   C. E = G (1 + v)/2
   D. E = 2G (1 + 2v)

2. _______________ test determines the yield strength, Young’s modulus of elasticity, percentage reduction in area & percentage elongation of a material ?

   A. Tensile
   B. Fatigue
   C. Impact
   D. None of these

3. The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?

   A. Pressure
   B. Density
   C. Force
   D. None of these

4. Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________?

   A. Wet
   B. Saturated
   C. Superheated
   D. None of these

5. Young’s modulus of a material is the measure of its ___________________?

   A. Stiffness
   B. Malleability
   C. Creep resistance
   D. Tensile strength

6. Current employed in resistance welding ranges from ____________________ kVA/cm2?

   A. 1.2 to 2.5
   B. 4.5 to 6.2
   C. 7.5 to 8.5
   D. 10.5 to 15.5

7. A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?

   A. 10
   B. 30
   C. 50
   D. 80

8. A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?

   A. 6
   B. 18
   C. 38
   D. 52

9. The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?

   A. 273.15
   B. 225.65
   C. 100.03
   D. 373.15

10. Out of the following the refractive index is the highest for____________________?

    A. Glass
    B. Diamond
    C. Brine
    D. Kerosene