A. increases with rise in temperature
B. increases with moisture content
C. is same for all insulating materials
D. none of the above
Related Mcqs:
- 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 - Dielectric strength of a medium is usually expressed in____________?
A. J/mm
B. C/m2
C. kV/mm
D. N/mm - Which medium has the least dielectric strength ____________?
A. Paraffin wax
B. Quartz
C. Glass
D. Air - Dielectric strength of a material depends on_____________?
A. moisture content
B. temperature
C. thickness
D. all of the above
E. none of the above - The unit of dielectric strength is given by___________?
A. V/m
B. V2/m
C. m/V
D. m/V2 - Dielectric strength _________ with increasing thickness
A. increases
B. decreases
C. remains unaltered
D. none of the above - 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 - The dissipation factor of a good dielectric is of the order of____________?
A. 0.0002
B. 0.002
C. 0.02
D. 0.2 - When the dielectric is homogeneous,the potential gradient is_____________?
A. uniform
B. non-uniform
C. zero
D. any of the above - 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
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