Question

Which of the following is not the application of superconductors?

• A. Superconducting generators are smaller in size and weight in comparison with conventional generators.
• B. Superconductors can be used as memory or storage elements in computers.
• C. Superconducting magnets have been used to levitate trains above its rails.
• D. None of the above

Answer 1

The correct option is D None of the above

The applications of superconductors are as follows:

i) Superconducting generators are smaller in size and weight in comparison with conventional generators.

ii) Superconducting magnets have been used to levitate trains above its rails.

iii) Superconducting magnetic propulsion systems may be used to launch satellites into orbits directly from the earth without the use of rockets.

iv) High efficiency ore-separating machines may be built using superconducting magnets which can be used to separate tumor cells from healthy cells, by high gradient magnetic separation method.

v) Since the current in a superconducting wire can flow without any change in magnitude, it can be used for transmission lines.

vi) Superconductors can be used as memory or storage elements in computers.

Hence, D is correct.