The unit of dielectric strength is given by___________?

Related Mcqs:

1. 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

2. 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

3. 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

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

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

5. Which medium has the least dielectric strength ____________?

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

6. Dielectric strength of a material depends on_____________?

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

7. Dielectric strength _________ with increasing thickness

   A. increases
   B. decreases
   C. remains unaltered
   D. none of the above

8. 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

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