Which of the following resistive materials has the lowest temperature co-efficient of resistance ?

Related Mcqs:

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

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

2. Which of the following high resistance materials has the highest operating temperature ?

   A. Kanthal
   B. Manganin
   C. Nichrome
   D. Eureka

3. Substances whose specific resistance abruptly decreases at very low temperature are called___________?

   A. insulators
   B. conductors
   C. semiconductors
   D. superconductors

4. Which of the following materials is preferred for transmitting electrical energy over long distance ?

   A. Copper
   B. Aluminium
   C. Steel reinforced copper
   D. Steel reinforced aluminium

5. Which of the following materials does not have covalent bonds ?

   A. Organic polymers
   B. Silicon
   C. Metals

6. Which of the following materials is used for making coils of standard resistances ?

   A. Copper
   B. Nichrome
   C. Platinum
   D. Manganin

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

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

8. Spark plug makes use of which of the following materials for insulation ?

   A. Porcelain
   B. Slate
   C. Asbestos
   D. Glass

9. High resistivity materials are used in_____________?

   A. precision instruments
   B. heating elements
   C. motor starters
   D. incandescent lamps
   E. all of the above

10. Effect of moisture on the insulating materials is to________________?

    A. decrease dielectric constant
    B. decrease dielectric strength
    C. decrease insulation resistance
    D. increase dielectric loss
    E. all of the above