Dielectric Materials » Exercise – 1
1. On introducing a dielectric medium in between the plates of a capacitor, one of the following quantities will not change :
(a) Charge storing capacity
(b) Potential difference
(c) Electric field strength
(d) Electric flux density
2. Exposure of insulating material to moisture causes an increase in :
(a) Dielectric loss
(b) Dielectric constant
(c) Dielectric strength
(d) Insulation resistance
3. Dielectric materials are essentially :
(a) Insulating materials
(b) Ferro-electric materials
(c) Ferri-electric materials
(d) Superconducting materials
4. On placing a dielectric in an electric field, the field strength :
(a) Increases
(b) Decreases
(c) Remains constant
(d) Reduces to zero
5. Dielectric constant relates to :
(a) Comparative charge stored for a given material versus air
(b) The fact that the dielectric doesn’t have charge characteristics
(c) The insulating properties of the non-conducting mediums
(d) None of the above
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