The converse of hardness is known as______________?

Related Mcqs:

1. If the resistance of a conductor does not vary in accordance with Ohm’s law it is known as____________?

   A. non-linear conductor
   B. reverse conductor
   C. bad-conductor
   D. non-conductor

2. The metal having the lowest temperature coefficient of resistance is_________________?

   A. gold
   B. copper
   C. aluminium
   D. kanthal

3. The superconductivity is due to____________?

   A. the crystal structure having no atomic vibration at 0°K
   B. all electrons interact in the super-conducting state
   C. the electrons jump into nucleus at 0°K
   D. none of the above

4. By increasing impurity content in the metal alloy the residual resistivity always_____________?

   A. decreases
   B. increases
   C. remains constant
   D. becomes temperature independent

5. Which of the following affect greatly the resistivity of electrical conductors ?

   A. Composition
   B. Pressure
   C. Size
   D. Temperature

6. Thermonic emission occurs in______________?

   A. vacuum tubes
   B. copper conductors
   C. ferrite cores
   D. transistors

7. The number of atoms per unit cell in B.C.C. structure is_____________?

   A. 1
   B. 2
   C. 4
   D. 8

8. Which of the following is an advantage of stranded conductor over equivalent single conductor ?

   A. Less liability to kink
   B. Greater flexibility
   C. Less liability to break
   D. All of the above

9. ___________ has the best damping properties?

   A. Diamond
   B. High speed steel
   C. Mild steel
   D. Cast iron

10. Which of the following factors affect resistivity of metals ?

    A. Age hardening
    B. Alloying
    C. Temperature
    D. Cold work
    E. All of the above