Which of the following material has least value of dielectric constant ?

Related Mcqs:

1. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?

   A. 50
   B. 100
   C. 150
   D. 200

2. The value of dielectric constant for vacuum is taken as____________?

   A. zero
   B. 1
   C. 4
   D. 10

3. Which medium has the least dielectric strength ____________?

   A. Paraffin wax
   B. Quartz
   C. Glass
   D. Air

4. The dielectric constant (relative permittivity) of glass is given by___________?

   A. 0.1 to 0.4
   B. 0.5 to 1.0
   C. 2.0 to 4.0
   D. 5 to 100

5. Dielectric constant for mica is nearly_____________?

   A. 200
   B. 100
   C. 3 to 8
   D. 1 to 2

6. A dielectric material must be____________?

   A. resistor
   B. insulator
   C. good conductor
   D. semi conductor

7. Dielectric strength of a material depends on_____________?

   A. moisture content
   B. temperature
   C. thickness
   D. all of the above
   E. none of the above

8. Which of the following materials has the highest value of dielectric constant___________?

   A. Glass
   B. Vacuum
   C. Ceramics
   D. Oil

9. Which is the most superior dielectric out of the following ?

   A. Air
   B. Glass
   C. Bakelite
   D. Paper

10. Dielectric strength of medium____________?

    A. increases with rise in temperature
    B. increases with moisture content
    C. is same for all insulating materials
    D. none of the above