Dielectric strength _________ with increasing thickness

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. 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

3. Dielectric strength of a medium is usually expressed in____________?

   A. J/mm
   B. C/m2
   C. kV/mm
   D. N/mm

4. Which medium has the least dielectric strength ____________?

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

5. Dielectric strength of a material depends on_____________?

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

6. The unit of dielectric strength is given by___________?

   A. V/m
   B. V2/m
   C. m/V
   D. m/V2

7. Dielectric strength of mica is___________?

   A. 10 to 20 kV/mm
   B. 30 to 50 kV/mm
   C. 50 to 200 kV/mm
   D. 300 to 500 kV/mm

8. For making a capacitor, it is better to select a dielectric having___________?

   A. low permittivity
   B. high permittivity
   C. permittivity same as that of air
   D. permittivity slightly more than that of air

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

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

10. When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will______________?

    A. remain uncharged
    B. decrease
    C. increase
    D. become zero