Question

Q3) In a three layered dielectric concentric spheres, radii of spheres are: r? = 1 cm, r? = 2 cm, r?= 3 cm, r? = 4 cm and relative dielectric constants of layers are $\varepsilon_{r1}$ = 3, $\varepsilon_{r2}$ = 2, $\varepsilon_{r3}$ = 1. The applied voltage is 150 kV and the breakdown strength of the layers are $E_{b1}$ =100 kV/cm, $E_{b2}$=55 kV/cm and $E_{b3}$ =45 kV/cm respectively; a) Calculate voltages across each layer. (10 P) b) Determine whether the system can withstand to this applied voltage. (3 P) c) Specify the type of discharge in any layer. (7P)

          Q3) In a three layered dielectric concentric spheres, radii of spheres are: r? = 1 cm, r? = 2 cm, r?= 3 cm, r? = 4 cm and relative
dielectric constants of layers are $\varepsilon_{r1}$ = 3, $\varepsilon_{r2}$ = 2, $\varepsilon_{r3}$ = 1. The applied voltage is 150 kV and the breakdown strength of the
layers are $E_{b1}$ =100 kV/cm, $E_{b2}$=55 kV/cm and $E_{b3}$ =45 kV/cm respectively;
a) Calculate voltages across each layer. (10 P)
b) Determine whether the system can withstand to this applied voltage. (3 P)
c) Specify the type of discharge in any layer. (7P)

Q3) In a three layered dielectric concentric spheres, radii of spheres are: r? = 1 cm, r? = 2 cm, r?= 3 cm, r? = 4 cm and relative
dielectric constants of layers are εr1 = 3, εr2 = 2, εr3 = 1. The applied voltage is 150 kV and the breakdown strength of the
layers are Eb1 =100 kV/cm, Eb2=55 kV/cm and Eb3 =45 kV/cm respectively;
a) Calculate voltages across each layer. (10 P)
b) Determine whether the system can withstand to this applied voltage. (3 P)
c) Specify the type of discharge in any layer. (7P)

Added by Whitney G.

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