A. magnesium alloys
B. titanium alloys
C. chromium alloys
D. magnetic steel alloys
E. none of the above
Related Mcqs:
- The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will _________________?
A. increase
B. decrease
C. remain same
D. first increase and then decrease
E. show unpredictable behaviour - The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as________________?
A. hysteresis
B. creep
C. visco elasticity
D. Boeschinger effect
E. inelasticity - Structural steel contains following principal alloying elements__________________?
A. nickel, chromium and manganese
B. tungsten, molybdenum and phosphorous
C. lead, tin, aluminium
D. zinc, sulphur, and chromium
E. none of the above - A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?
A. sink to bottom
B. float over fluid
C. partly immersed
D. be fully immersed with top surface at fluid surface
E. none of the above - A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
A. 0.5
B. 0.4
C. 0.515
D. 0.5
E. none of the above - The following element can’t impart high strength at elevated temperature__________________?
A. manganese
B. magnesium
C. nickel
D. silicon
E. none of the above - Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is__________________?
A. silver metal
B. duralumin
C. Hastelloy
D. monel metal
E. invar - The ultimate tensile strength of low carbon steel by working at a high strain rate will_________________?
A. decrease
B. increase
C. remain constant
D. first increase and then decrease
E. first decrease and then increase - Tensile strength of steel can be safely in-creased by________________?
A. adding carbon up to 2.8%
B. adding carbon up to 6.3%
C. adding carbon up to 0.83%
D. adding small quantities of copper
E. adding copper and carbon - The tensile strength of wrought iron is maximum _________________?
A. along the lines of slag distribution
B. perpendicular to lines of slag distribution
C. uniform in all directions
D. unpredictable
E. none of the above
