A perfect conductor has_____________?

Related Mcqs:

1. 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...

2. The conductivity of a conductor can be increased by_______________?

   A. decreasing its temperature B. increasing its temperature C. decreasing its vibration D. increasing its vibration...

3. The structure sensitive property of a super conductor is______________?

   A. critical magnetic field B. transition temperature C. critical current density D. none of the above...

4. Which of the following is the poorest conductor of electricity ?

   A. Carbon B. Steel C. Silver D. Aluminium...

5. Which of the following materials is the best conductor of electricity ?

   A. Tungsten B. Aluminium C. Copper D. Carbon...

6. 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...

7. 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...

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

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

9. Thermonic emission occurs in______________?

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

10. ___________ has the best damping properties?

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